aad7795af4a9c0c9aed5b5fc616a4583f835227f2614d1c376cf911e68f822db

Analysis

max time kernel
148s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
29/01/2024, 13:31

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General

Target

2024-01-29_c963a5e8369b978b3cef6ee39e67fa5e_cryptolocker.exe
Size

40KB
MD5

c963a5e8369b978b3cef6ee39e67fa5e
SHA1

153bc7b81847a716008b76df2217c2b51b41b2ad
SHA256

aad7795af4a9c0c9aed5b5fc616a4583f835227f2614d1c376cf911e68f822db
SHA512

c2462e0250256c1cae62f8f7a472a647a2f27c7ec638df6c6b0d7e4ccf4a38867c14b5383a5fbb99a0fdb56f66541af8cdd7d59f8c0f0e8d9a9d537fa62d5a47
SSDEEP

384:e/4wODQkzonAYsju5N/surDQtOOtEvwDpjqIGROqS/Wcz0BVFHxMiBA:79inqyNR/QtOOtEvwDpjBKcmfxMii

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/2712-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0008000000023207-13.dat	CryptoLocker_rule2
behavioral2/memory/2712-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/5112-18-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/2712-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0008000000023207-13.dat	CryptoLocker_set1
behavioral2/memory/2712-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/5112-18-0x0000000000500000-0x000000000050F000-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-1-5-21-3803511929-1339359695-2191195476-1000\Control Panel\International\Geo\Nation	2024-01-29_c963a5e8369b978b3cef6ee39e67fa5e_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
5112	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 2712 wrote to memory of 5112	2712	2024-01-29_c963a5e8369b978b3cef6ee39e67fa5e_cryptolocker.exe	89
PID 2712 wrote to memory of 5112	2712	2024-01-29_c963a5e8369b978b3cef6ee39e67fa5e_cryptolocker.exe	89
PID 2712 wrote to memory of 5112	2712	2024-01-29_c963a5e8369b978b3cef6ee39e67fa5e_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-01-29_c963a5e8369b978b3cef6ee39e67fa5e_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-29_c963a5e8369b978b3cef6ee39e67fa5e_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2712
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:5112

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
40KB

MD5
3a6ae01beb1284dd4f60c3da1ca6d311

SHA1
332b6c2f1e1499ed5aed248bbbc8364a1a1de002

SHA256
adb50b502e2275ec3f44d76ab4aa35f0ab394f5a4fcbf0444e629b9922f4fa27

SHA512
2d691f88f48b4e45f324b631baffcef5cf349a4b3ba86c33e50aa8b4f09255c8897a92c0781e0612c5ed16cb796a9a010bf676edd740a6be95bed7325a1d6af4

Download Submit
memory/2712-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2712-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2712-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2712-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/2712-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/5112-18-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/5112-20-0x0000000001FF0000-0x0000000001FF6000-memory.dmp

Filesize
24KB

Download
memory/5112-21-0x0000000000670000-0x0000000000676000-memory.dmp

Filesize
24KB

Download