76ae39508df323f3194b598d9344c2d0cd50682e1372f955670580754350f5b9

Analysis

max time kernel
144s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20220901-en
resource tags

arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
submitted
01/12/2022, 09:40

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General

Target

76ae39508df323f3194b598d9344c2d0cd50682e1372f955670580754350f5b9.exe
Size

2.2MB
MD5

b68e67eb739a2cf86e5942a4bb258e8a
SHA1

241d7255b571cd4b50dde9f384c5dc72da7c84b6
SHA256

76ae39508df323f3194b598d9344c2d0cd50682e1372f955670580754350f5b9
SHA512

ac98c41e4f8b7a15c3245084443f69211f359ba8d3a6aa43f3cd51320c6d6444f66499e09f898f11b5750a7846145247f59e0621084d5344de4e6942e4963f57
SSDEEP

49152:3/FJJGc6WNSfNZC3qDKwwEQRqWaQspVV193fvk1GVEsLVyNXBbyNP:39OONSVZ1OIXQsAG2cSXFyNP

Score

8^/10

aspackv2 bootkit persistence

Malware Config

Signatures

ASPack v2.12-2.42 2 IoCs

Detects executables packed with ASPack v2.12-2.42

aspackv2

resource	yara_rule
behavioral2/files/0x0005000000022e17-134.dat	aspack_v212_v242
behavioral2/files/0x0005000000022e17-133.dat	aspack_v212_v242

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation	76ae39508df323f3194b598d9344c2d0cd50682e1372f955670580754350f5b9.exe

Loads dropped DLL 2 IoCs

pid	Process
4424	76ae39508df323f3194b598d9344c2d0cd50682e1372f955670580754350f5b9.exe
4424	76ae39508df323f3194b598d9344c2d0cd50682e1372f955670580754350f5b9.exe

Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

Bootkits write to the MBR to gain persistence at a level below the operating system.

bootkit persistence

Bootkit

T1067

description	ioc	Process
File opened for modification	\??\PhysicalDrive0	76ae39508df323f3194b598d9344c2d0cd50682e1372f955670580754350f5b9.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4424	76ae39508df323f3194b598d9344c2d0cd50682e1372f955670580754350f5b9.exe
4424	76ae39508df323f3194b598d9344c2d0cd50682e1372f955670580754350f5b9.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2444 wrote to memory of 4424	2444	76ae39508df323f3194b598d9344c2d0cd50682e1372f955670580754350f5b9.exe	82
PID 2444 wrote to memory of 4424	2444	76ae39508df323f3194b598d9344c2d0cd50682e1372f955670580754350f5b9.exe	82
PID 2444 wrote to memory of 4424	2444	76ae39508df323f3194b598d9344c2d0cd50682e1372f955670580754350f5b9.exe	82

C:\Users\Admin\AppData\Local\Temp\76ae39508df323f3194b598d9344c2d0cd50682e1372f955670580754350f5b9.exe
"C:\Users\Admin\AppData\Local\Temp\76ae39508df323f3194b598d9344c2d0cd50682e1372f955670580754350f5b9.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2444
- C:\Users\Admin\AppData\Local\Temp\76ae39508df323f3194b598d9344c2d0cd50682e1372f955670580754350f5b9.exe
  "C:\Users\Admin\AppData\Local\Temp\76ae39508df323f3194b598d9344c2d0cd50682e1372f955670580754350f5b9.exe" -1
  2⤵
  - Loads dropped DLL
  - Writes to the Master Boot Record (MBR)
  - Suspicious use of SetWindowsHookEx
  PID:4424

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Bootkit

T1067

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\B2101742-CEC7-4179-9D92-C656ACA7209E.dll

Filesize
384KB

MD5
e2fe027935a2ce9f0b256f33361f038d

SHA1
024adde42d2f4b78ce32957e6a0255f0535b6315

SHA256
0793fe57ccba46a0af28534b68f3c6e70f9cc0e8c4ab1f7a67ebde1ae974acd0

SHA512
1f3bab51fb4f6aae96b75ec3287025b927cb4f2ced7bb0d9d3ef18c54d368554ecac2742b9f6b6bb6dfa48181c8ba87a941820325fd92b6ed7b88916133d15ba

Download Submit
C:\Users\Admin\AppData\Local\Temp\B2101742-CEC7-4179-9D92-C656ACA7209E.dll

Filesize
384KB

MD5
e2fe027935a2ce9f0b256f33361f038d

SHA1
024adde42d2f4b78ce32957e6a0255f0535b6315

SHA256
0793fe57ccba46a0af28534b68f3c6e70f9cc0e8c4ab1f7a67ebde1ae974acd0

SHA512
1f3bab51fb4f6aae96b75ec3287025b927cb4f2ced7bb0d9d3ef18c54d368554ecac2742b9f6b6bb6dfa48181c8ba87a941820325fd92b6ed7b88916133d15ba

Download Submit