823397b7d4dc5f1d3c7a083b681251b66fe45c17b656e8e109b69c40ed894985

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
29/03/2024, 02:53

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General

Target

2024-03-29_5659cb1d8d263a7bcabc9b5a2cc33067_cryptolocker.exe
Size

45KB
MD5

5659cb1d8d263a7bcabc9b5a2cc33067
SHA1

196ef36d163d2db36e2051124fc0e6a96ff53e91
SHA256

823397b7d4dc5f1d3c7a083b681251b66fe45c17b656e8e109b69c40ed894985
SHA512

3166a44a2a5ddcb93c33d34d36b182a614dc28d5edb744f6499067f7dd12f77e0fc757214f0dfc27f4f4639fdbc1d78d55e0ba38bb8566a9a6a71d1a9dc00468
SSDEEP

768:wHGGaSawqnwjRQ6ESlmFOsPoOdQtOOtEvwDpjm6j4AYsqSh+DETkedmhXSJJL:YGzl5wjRQBBOsP1QMOtEvwDpjl39+D+9

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 3 IoCs

resource	yara_rule
behavioral2/memory/2152-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000800000002321d-13.dat	CryptoLocker_rule2
behavioral2/memory/2152-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral2/memory/2152-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000800000002321d-13.dat	CryptoLocker_set1
behavioral2/memory/2152-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1

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-1-5-21-983155329-280873152-1838004294-1000\Control Panel\International\Geo\Nation	2024-03-29_5659cb1d8d263a7bcabc9b5a2cc33067_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2940	asih.exe

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

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2152 wrote to memory of 2940	2152	2024-03-29_5659cb1d8d263a7bcabc9b5a2cc33067_cryptolocker.exe	87
PID 2152 wrote to memory of 2940	2152	2024-03-29_5659cb1d8d263a7bcabc9b5a2cc33067_cryptolocker.exe	87
PID 2152 wrote to memory of 2940	2152	2024-03-29_5659cb1d8d263a7bcabc9b5a2cc33067_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-03-29_5659cb1d8d263a7bcabc9b5a2cc33067_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-29_5659cb1d8d263a7bcabc9b5a2cc33067_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2152
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2940

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

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\asih.exe

Filesize
45KB

MD5
e37a566b226a9fd1578b12df8298fc9d

SHA1
72afef673bc1de39663ced7bd9e2b5478ade929e

SHA256
068526c9b1b992dc606105b0b44a48919391b1d66a8bd585a436257fa14037e2

SHA512
5710670c9ec86d9956c469ee8f74fa761824c3fa2c550a18305cf0f079cf3fe7226a7168a4825b88f93a01adcbbd063d61743a0239bd0991b90bca47d3bcb1d4

Download Submit
memory/2152-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2152-1-0x0000000000640000-0x0000000000646000-memory.dmp

Filesize
24KB

Download
memory/2152-2-0x0000000000640000-0x0000000000646000-memory.dmp

Filesize
24KB

Download
memory/2152-3-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/2152-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2940-19-0x0000000002100000-0x0000000002106000-memory.dmp

Filesize
24KB

Download
memory/2940-22-0x00000000020D0000-0x00000000020D6000-memory.dmp

Filesize
24KB

Download