4ec9e919597ae3de952e3a3c30ff52f076fd16333db63c419ba68eee1be74753

Analysis

max time kernel
158s
max time network
166s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
13/03/2024, 01:51

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General

Target

2024-03-13_b3c71fe4784494d0c52bf5a5d3ffb6f4_cryptolocker.exe
Size

104KB
MD5

b3c71fe4784494d0c52bf5a5d3ffb6f4
SHA1

51a9c427eb277856a896b7baf866e1df7e26814b
SHA256

4ec9e919597ae3de952e3a3c30ff52f076fd16333db63c419ba68eee1be74753
SHA512

289acaf15e42ba3bb93245c3f325ec3ac5fa8cf1f335e1992794a6d374d3d15931142bef12d49a184e89cb692bc535ec48fd58c34c1e3bcb020489a608d0d792
SSDEEP

1536:V6QFElP6n+gMQMOtEvwDpjQGYQbN/PKwNgpQbCJhA:V6a+pOtEvwDpjtzx

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x0009000000012265-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x0009000000012265-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2372	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2360	2024-03-13_b3c71fe4784494d0c52bf5a5d3ffb6f4_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 2360 wrote to memory of 2372	2360	2024-03-13_b3c71fe4784494d0c52bf5a5d3ffb6f4_cryptolocker.exe	27
PID 2360 wrote to memory of 2372	2360	2024-03-13_b3c71fe4784494d0c52bf5a5d3ffb6f4_cryptolocker.exe	27
PID 2360 wrote to memory of 2372	2360	2024-03-13_b3c71fe4784494d0c52bf5a5d3ffb6f4_cryptolocker.exe	27
PID 2360 wrote to memory of 2372	2360	2024-03-13_b3c71fe4784494d0c52bf5a5d3ffb6f4_cryptolocker.exe	27

C:\Users\Admin\AppData\Local\Temp\2024-03-13_b3c71fe4784494d0c52bf5a5d3ffb6f4_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-13_b3c71fe4784494d0c52bf5a5d3ffb6f4_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2360
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2372

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
105KB

MD5
6abe99c4d9f6c44e3071bf27eef69fb4

SHA1
93ab0d1e3687f293ac0a29e036c28aa862f85651

SHA256
8b1042729a0eb0b27f48e5b2c35da6afaad82d9f8cf29c2f751241f26d3f61f7

SHA512
92438024d82cfa10dba375835cd92f35028695341b243e9f8f6bd3808153e73320fc506b462c68ced2ad9400ae207f2250d2ab8891e97f77b52edd7d9eb86431

Download Submit
memory/2360-0-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download
memory/2360-2-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download
memory/2360-1-0x0000000000350000-0x0000000000356000-memory.dmp

Filesize
24KB

Download
memory/2372-15-0x0000000000270000-0x0000000000276000-memory.dmp

Filesize
24KB

Download
memory/2372-22-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download