608e854ed567ee9f5911e5929e6ae6b3fac55c74b006183224058172f6059430

General

Target

2024-05-14_b0c69808ea262de697a605150d7fdc79_cryptolocker.exe
Size

39KB
MD5

b0c69808ea262de697a605150d7fdc79
SHA1

285915982ad8a07ae2a8f243812c06cb4971d925
SHA256

608e854ed567ee9f5911e5929e6ae6b3fac55c74b006183224058172f6059430
SHA512

473a6c8a73f51dce3c0b5baeb8f8eb3e46a38359c92750c55c54d4b089dc5a0ef286254905f3c6452cc85a458eb41e22ccdeaecf86173d3b476039b3e98ac9bb
SSDEEP

768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITYf1m:qDdFJy3QMOtEvwDpjjWMl7Tqm

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 6 IoCs

resource	yara_rule
behavioral1/memory/1688-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000a0000000120fa-11.dat	CryptoLocker_rule2
behavioral1/memory/1688-13-0x0000000002260000-0x0000000002270000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1688-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2004-19-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2004-28-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 6 IoCs

resource	yara_rule
behavioral1/memory/1688-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000a0000000120fa-11.dat	CryptoLocker_set1
behavioral1/memory/1688-13-0x0000000002260000-0x0000000002270000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1688-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2004-19-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2004-28-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 6 IoCs

resource	yara_rule
behavioral1/memory/1688-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000a0000000120fa-11.dat	UPX
behavioral1/memory/1688-13-0x0000000002260000-0x0000000002270000-memory.dmp	UPX
behavioral1/memory/1688-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2004-19-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2004-28-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2004	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
1688	2024-05-14_b0c69808ea262de697a605150d7fdc79_cryptolocker.exe

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1688-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000a0000000120fa-11.dat	upx
behavioral1/memory/1688-13-0x0000000002260000-0x0000000002270000-memory.dmp	upx
behavioral1/memory/1688-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2004-19-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2004-28-0x0000000000500000-0x0000000000510000-memory.dmp	upx

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

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1688 wrote to memory of 2004	1688	2024-05-14_b0c69808ea262de697a605150d7fdc79_cryptolocker.exe	28
PID 1688 wrote to memory of 2004	1688	2024-05-14_b0c69808ea262de697a605150d7fdc79_cryptolocker.exe	28
PID 1688 wrote to memory of 2004	1688	2024-05-14_b0c69808ea262de697a605150d7fdc79_cryptolocker.exe	28
PID 1688 wrote to memory of 2004	1688	2024-05-14_b0c69808ea262de697a605150d7fdc79_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-14_b0c69808ea262de697a605150d7fdc79_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-14_b0c69808ea262de697a605150d7fdc79_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1688
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2004

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
39KB

MD5
293b2cceb500b6312f58bb33e59335e2

SHA1
9d5a90032f54322d7ee86154f499eeb518682ef6

SHA256
9fc30c3a7a5c444fdf8814c691484aa6b24882ff3449d3cb7521ff3dcb897f61

SHA512
5f9e6b4c41ffbabf0d0bc346d0a88d199796445a0ac88ad428d2929cd1d58b40c250a8c5161b5760dbe0ae31643ece4c105519fe143b5af2f634670042abe974

Download Submit
memory/1688-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1688-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1688-2-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1688-3-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/1688-13-0x0000000002260000-0x0000000002270000-memory.dmp

Filesize
64KB

Download
memory/1688-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2004-19-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2004-20-0x0000000000460000-0x0000000000466000-memory.dmp

Filesize
24KB

Download
memory/2004-27-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download
memory/2004-28-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download

Analysis

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