acf98fe6a7e91bdecbb3e7cab22b6be9aa9ff55779e156e6bde7faece1d1bd75

Analysis

max time kernel
147s
max time network
150s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
11-06-2024 19:30

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General

Target

2024-06-11_54ad142bc62175e9b26e879f0be7f33f_cryptolocker.exe
Size

54KB
MD5

54ad142bc62175e9b26e879f0be7f33f
SHA1

8cbca27b0780d8e77b705f36a9963f5998809e16
SHA256

acf98fe6a7e91bdecbb3e7cab22b6be9aa9ff55779e156e6bde7faece1d1bd75
SHA512

c4fb48e7de69e9e07a62260ce923abc52ee8d4f20417568e2436e06ac2ccad3fda74b97283a74551ce07ec807f79ece20f210b151a5e72955557c2a43e9e5f83
SSDEEP

768:79inqyNR/QtOOtEvwDpjBK/rJ+Nw8qn8pKIRszDr6KAH:79mqyNhQMOtEvwDpjBxe8TpXRSDeKQ

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/1920-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000f000000012289-11.dat	CryptoLocker_rule2
behavioral1/memory/1920-15-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1964-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral1/memory/1920-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000f000000012289-11.dat	CryptoLocker_set1
behavioral1/memory/1920-15-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1964-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
1964	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
1920	2024-06-11_54ad142bc62175e9b26e879f0be7f33f_cryptolocker.exe

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 1920 wrote to memory of 1964	1920	2024-06-11_54ad142bc62175e9b26e879f0be7f33f_cryptolocker.exe	28
PID 1920 wrote to memory of 1964	1920	2024-06-11_54ad142bc62175e9b26e879f0be7f33f_cryptolocker.exe	28
PID 1920 wrote to memory of 1964	1920	2024-06-11_54ad142bc62175e9b26e879f0be7f33f_cryptolocker.exe	28
PID 1920 wrote to memory of 1964	1920	2024-06-11_54ad142bc62175e9b26e879f0be7f33f_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-06-11_54ad142bc62175e9b26e879f0be7f33f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-11_54ad142bc62175e9b26e879f0be7f33f_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1920
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1964

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
54KB

MD5
2ee678ddbc9237b317e92c6c23e036d4

SHA1
1dcb6629ab243809dcb59173a3ac2c9c2f846835

SHA256
5b055d085917dce1ed8eebcc347d42f6656111224b0ff294d397593406c8da7a

SHA512
3b4d770be0526d311a87cc0d1dedbe153e0c4f6d93a13cfccc0fe0ca55779c25d6255d2fd014391572bbfe0b41b8243eef4618031d628d9c8314aaf554c7fc44

Download Submit
memory/1920-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1920-1-0x0000000000440000-0x0000000000446000-memory.dmp

Filesize
24KB

Download
memory/1920-2-0x0000000000480000-0x0000000000486000-memory.dmp

Filesize
24KB

Download
memory/1920-9-0x0000000000440000-0x0000000000446000-memory.dmp

Filesize
24KB

Download
memory/1920-15-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1964-16-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1964-18-0x00000000004A0000-0x00000000004A6000-memory.dmp

Filesize
24KB

Download
memory/1964-25-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download