AcidPour

S1167

Malware.View on attack.mitre.org

About this malware

AcidPour is a variant of AcidRain designed to impact a wider range of x86 architecture Linux devices. AcidPour is an x86 ELF binary that expands on the targeted devices and locations in AcidRain by including items such as Unsorted Block Image (UBI), Deice Mapper (DM), and various flash memory references. Based on this expanded targeting, AcidPour can impact a variety of device types including IoT, networking, and ICS embedded device types. AcidPour is a wiping payload associated with the Sandworm Team threat actor, and potentially linked to attacks against Ukrainian internet service providers (ISPs) in 2023.

Techniques used7

Procedure examples7

TechniqueProcedure example
T1070.004
File Deletion

AcidPour includes a self-delete function where the malware deletes itself from disk after execution and program load into memory.

T1082
System Information Discovery

AcidPour can identify various system locations and mapped devices on Linux systems as a precursor to wiping activity.

T1083
File and Directory Discovery

AcidPour can identify specific files and directories within the Linux operating system corresponding with storage devices for follow-on wiping activity, similar to AcidRain.

T1120
Peripheral Device Discovery

AcidPour includes functionality to identify MMC and SD cards connected to the victim device.

T1485
Data Destruction

AcidPour can perform an in-depth wipe of victim filesystems and attached storage devices through either data overwrite or calling various IOCTLS to erase them, similar to AcidRain.

T1529
System Shutdown/Reboot

AcidPour includes functionality to reboot the victim system following wiping actions, similar to AcidRain.

T1561.001
Disk Content Wipe

AcidPour includes functionality to overwrite victim devices with the content of a buffer to wipe disk content.

Groups that use it1

Campaigns0

None recorded.

References2

  1. CERT-UA TelecomAttack 2023 Open source
    CERT-UA. (2023, October 15). Peculiarities of destructive Sandworm cyber attacks against Ukrainian providers (CERT-UA#7627). Retrieved November 25, 2024.
  2. SentinelOne AcidPour 2024 Open source
    Juan Andrés Guerrero-Saade & Tom Hegel. (2024, March 21). AcidPour | New Embedded Wiper Variant of AcidRain Appears in Ukraine. Retrieved November 25, 2024.

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