6ff8abfa4e2cc49fe824d8b499c8205a983b035c3eba590771a05c4a29155895

Analysis

max time kernel
148s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240221-en
resource tags

arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
submitted
22/02/2024, 15:52

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General

Target

2024-02-22_df332be7ba54c78d57a339cacfe1047d_cryptolocker.exe
Size

44KB
MD5

df332be7ba54c78d57a339cacfe1047d
SHA1

b9e76c502130fe394b59e7a9364f09092b28b355
SHA256

6ff8abfa4e2cc49fe824d8b499c8205a983b035c3eba590771a05c4a29155895
SHA512

ecaa509ca1bafdae8260311b1e1a10eca2c67c837b5914e6233aed178c74463832a505bfae14c04733fd4775e933728a429c0b45c06cadc00b06e7b1e634abde
SSDEEP

768:wHGGaSawqnwjRQ6ESlmFOsPoOdQtOOtEvwDpjm6j4AYsqSh+DETkedm+YUS5f:YGzl5wjRQBBOsP1QMOtEvwDpjl39+D+e

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 3 IoCs

resource	yara_rule
behavioral2/memory/4792-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000300000001fc40-13.dat	CryptoLocker_rule2
behavioral2/memory/4792-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral2/memory/4792-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000300000001fc40-13.dat	CryptoLocker_set1
behavioral2/memory/4792-17-0x0000000000500000-0x000000000050B000-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-1-5-21-3316742141-2240921845-2885234760-1000\Control Panel\International\Geo\Nation	2024-02-22_df332be7ba54c78d57a339cacfe1047d_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1064	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 4792 wrote to memory of 1064	4792	2024-02-22_df332be7ba54c78d57a339cacfe1047d_cryptolocker.exe	89
PID 4792 wrote to memory of 1064	4792	2024-02-22_df332be7ba54c78d57a339cacfe1047d_cryptolocker.exe	89
PID 4792 wrote to memory of 1064	4792	2024-02-22_df332be7ba54c78d57a339cacfe1047d_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-02-22_df332be7ba54c78d57a339cacfe1047d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-22_df332be7ba54c78d57a339cacfe1047d_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4792
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1064

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
44KB

MD5
e2cd7a00480524c7743f12712ebd9a45

SHA1
6483472f15ebfd88dbda068aa050d4377edf2382

SHA256
ce9c34a5ebc90b04fce4b680a0545aabba31f07033e75c8f9c459efa00731329

SHA512
1aeea1d090d51d206972e7100e13a0a861564a351a5667a70726f1c8730cbc3b9300bd45e34bd16adfd9576fa42b11748d0500a350c4ebe07fa98b4a1e0704f1

Download Submit
memory/1064-19-0x0000000000760000-0x0000000000766000-memory.dmp

Filesize
24KB

Download
memory/1064-25-0x00000000021E0000-0x00000000021E6000-memory.dmp

Filesize
24KB

Download
memory/4792-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/4792-1-0x0000000000570000-0x0000000000576000-memory.dmp

Filesize
24KB

Download
memory/4792-2-0x0000000000570000-0x0000000000576000-memory.dmp

Filesize
24KB

Download
memory/4792-3-0x0000000002230000-0x0000000002236000-memory.dmp

Filesize
24KB

Download
memory/4792-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download