b91f272ca6c38f8382c2a911182ff7b9af6b7975888c8ad9ebf53a3336dcc671

General

Target

b91f272ca6c38f8382c2a911182ff7b9af6b7975888c8ad9ebf53a3336dcc671.exe
Size

935KB
MD5

496a816bfba5fab6816ce5ae76d306b5
SHA1

709d932a09d9d7c141102ef32001753dfb686c33
SHA256

b91f272ca6c38f8382c2a911182ff7b9af6b7975888c8ad9ebf53a3336dcc671
SHA512

955ebb10a965f75f5d6718a5019f23d876e1bb986ede1f323aa0f20126002130f3d4776b6bd6b989898749809879a6b326afc06efaaa8bf60a7f96e16f43e873
SSDEEP

12288:I5Yr15f753d5QWIDz/Wz9NCyzHinLipNDJ5eoFb0OZ/WiGaks+HL63S27x4R:IyHv5Z+Wzv7AiBll0OBWi6si9GQ

Score

8^/10

upx

Malware Config

Signatures

UPX packed file 8 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/memory/1184-55-0x0000000000400000-0x00000000004F2000-memory.dmp	upx
behavioral1/memory/1184-58-0x0000000000400000-0x00000000004F2000-memory.dmp	upx
behavioral1/memory/1184-57-0x0000000000400000-0x00000000004F2000-memory.dmp	upx
behavioral1/memory/1184-61-0x0000000000400000-0x00000000004F2000-memory.dmp	upx
behavioral1/memory/1184-63-0x0000000000400000-0x00000000004F2000-memory.dmp	upx
behavioral1/memory/1184-64-0x0000000000400000-0x00000000004F2000-memory.dmp	upx
behavioral1/memory/1184-65-0x0000000000400000-0x00000000004F2000-memory.dmp	upx
behavioral1/memory/1184-66-0x0000000000400000-0x00000000004F2000-memory.dmp	upx

Checks BIOS information in registry 2 TTPs 2 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	b91f272ca6c38f8382c2a911182ff7b9af6b7975888c8ad9ebf53a3336dcc671.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	b91f272ca6c38f8382c2a911182ff7b9af6b7975888c8ad9ebf53a3336dcc671.exe

Maps connected drives based on registry 3 TTPs 2 IoCs

Disk information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	b91f272ca6c38f8382c2a911182ff7b9af6b7975888c8ad9ebf53a3336dcc671.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0	b91f272ca6c38f8382c2a911182ff7b9af6b7975888c8ad9ebf53a3336dcc671.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1668 set thread context of 1184	1668	b91f272ca6c38f8382c2a911182ff7b9af6b7975888c8ad9ebf53a3336dcc671.exe	29

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1184	b91f272ca6c38f8382c2a911182ff7b9af6b7975888c8ad9ebf53a3336dcc671.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1668 wrote to memory of 1184	1668	b91f272ca6c38f8382c2a911182ff7b9af6b7975888c8ad9ebf53a3336dcc671.exe	29
PID 1668 wrote to memory of 1184	1668	b91f272ca6c38f8382c2a911182ff7b9af6b7975888c8ad9ebf53a3336dcc671.exe	29
PID 1668 wrote to memory of 1184	1668	b91f272ca6c38f8382c2a911182ff7b9af6b7975888c8ad9ebf53a3336dcc671.exe	29
PID 1668 wrote to memory of 1184	1668	b91f272ca6c38f8382c2a911182ff7b9af6b7975888c8ad9ebf53a3336dcc671.exe	29
PID 1668 wrote to memory of 1184	1668	b91f272ca6c38f8382c2a911182ff7b9af6b7975888c8ad9ebf53a3336dcc671.exe	29
PID 1668 wrote to memory of 1184	1668	b91f272ca6c38f8382c2a911182ff7b9af6b7975888c8ad9ebf53a3336dcc671.exe	29
PID 1668 wrote to memory of 1184	1668	b91f272ca6c38f8382c2a911182ff7b9af6b7975888c8ad9ebf53a3336dcc671.exe	29
PID 1668 wrote to memory of 1184	1668	b91f272ca6c38f8382c2a911182ff7b9af6b7975888c8ad9ebf53a3336dcc671.exe	29

C:\Users\Admin\AppData\Local\Temp\b91f272ca6c38f8382c2a911182ff7b9af6b7975888c8ad9ebf53a3336dcc671.exe
"C:\Users\Admin\AppData\Local\Temp\b91f272ca6c38f8382c2a911182ff7b9af6b7975888c8ad9ebf53a3336dcc671.exe"
1⤵
- Checks BIOS information in registry
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1668
- C:\Users\Admin\AppData\Local\Temp\b91f272ca6c38f8382c2a911182ff7b9af6b7975888c8ad9ebf53a3336dcc671.exe
  "C:\Users\Admin\AppData\Local\Temp\b91f272ca6c38f8382c2a911182ff7b9af6b7975888c8ad9ebf53a3336dcc671.exe" Track="0001001000"
  2⤵
  - Suspicious use of SetWindowsHookEx
  PID:1184

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/1184-54-0x0000000000400000-0x00000000004F2000-memory.dmp

Filesize
968KB

Download
memory/1184-55-0x0000000000400000-0x00000000004F2000-memory.dmp

Filesize
968KB

Download
memory/1184-58-0x0000000000400000-0x00000000004F2000-memory.dmp

Filesize
968KB

Download
memory/1184-57-0x0000000000400000-0x00000000004F2000-memory.dmp

Filesize
968KB

Download
memory/1184-61-0x0000000000400000-0x00000000004F2000-memory.dmp

Filesize
968KB

Download
memory/1184-62-0x0000000074DA1000-0x0000000074DA3000-memory.dmp

Filesize
8KB

Download
memory/1184-63-0x0000000000400000-0x00000000004F2000-memory.dmp

Filesize
968KB

Download
memory/1184-64-0x0000000000400000-0x00000000004F2000-memory.dmp

Filesize
968KB

Download
memory/1184-65-0x0000000000400000-0x00000000004F2000-memory.dmp

Filesize
968KB

Download
memory/1184-66-0x0000000000400000-0x00000000004F2000-memory.dmp

Filesize
968KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads