0ced20722813e2754ca7741cf4d4c3d608be73882a57a77b65390d08dc512970

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
24/05/2024, 04:36

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General

Target

2024-05-24_8b8e273bea40fed5a2a938d07b0d3469_cryptolocker.exe
Size

52KB
MD5

8b8e273bea40fed5a2a938d07b0d3469
SHA1

d8840788dd559726d2fd2681f8c2fa776b04f387
SHA256

0ced20722813e2754ca7741cf4d4c3d608be73882a57a77b65390d08dc512970
SHA512

635efbc6df251516b16bf6109f9db46bd869f49dbdadb81a0979d1a6323ff7b534038ff641c848c5dd00fca8da5a212a1ae2d679a1b431334eb28f7595c50dbe
SSDEEP

768:79inqyNR/QtOOtEvwDpjBK/rJ+Nw8qn8pKIRszDr6at:79mqyNhQMOtEvwDpjBxe8TpXRSDeat

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/932-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000a00000002328e-13.dat	CryptoLocker_rule2
behavioral2/memory/932-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/388-18-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/932-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000a00000002328e-13.dat	CryptoLocker_set1
behavioral2/memory/932-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/388-18-0x0000000000500000-0x000000000050F000-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-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	2024-05-24_8b8e273bea40fed5a2a938d07b0d3469_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
388	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 932 wrote to memory of 388	932	2024-05-24_8b8e273bea40fed5a2a938d07b0d3469_cryptolocker.exe	83
PID 932 wrote to memory of 388	932	2024-05-24_8b8e273bea40fed5a2a938d07b0d3469_cryptolocker.exe	83
PID 932 wrote to memory of 388	932	2024-05-24_8b8e273bea40fed5a2a938d07b0d3469_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-05-24_8b8e273bea40fed5a2a938d07b0d3469_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-24_8b8e273bea40fed5a2a938d07b0d3469_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:932
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:388

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
52KB

MD5
ecf90eb2f06ad3cd352256d995b1e573

SHA1
3e31a6a464d6c0639e072e8e6f2dac6616debee1

SHA256
9b47049ada8c606da2f5585d6da5a12b5568730786e13aa10355bb6fa9205409

SHA512
7fd904cde608e091bf12a519866967bc4a5caef65331d27040401f53a1add06b24e03e584cc38f4f0f42db3e5eaede60bdf13a7db9c24484a0ca68cabeac7ac6

Download Submit
memory/388-18-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/388-20-0x0000000002100000-0x0000000002106000-memory.dmp

Filesize
24KB

Download
memory/388-26-0x00000000020E0000-0x00000000020E6000-memory.dmp

Filesize
24KB

Download
memory/932-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/932-1-0x0000000000620000-0x0000000000626000-memory.dmp

Filesize
24KB

Download
memory/932-2-0x0000000000620000-0x0000000000626000-memory.dmp

Filesize
24KB

Download
memory/932-3-0x0000000000750000-0x0000000000756000-memory.dmp

Filesize
24KB

Download
memory/932-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download