6d2885de2706d151066029846586e0824bd1b2cc285bbb0b0ae7fed5ce5ffe77

Analysis

max time kernel
142s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240221-en
resource tags

arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
submitted
21-02-2024 17:51

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General

Target

2024-02-21_6045e6c4b40822048c6691ec72807add_cryptolocker.exe
Size

94KB
MD5

6045e6c4b40822048c6691ec72807add
SHA1

61725519e6d906ed501644603fe67614e1dead3e
SHA256

6d2885de2706d151066029846586e0824bd1b2cc285bbb0b0ae7fed5ce5ffe77
SHA512

7fe45a35b19cc983cd98cfd7b91cfe2d11b25d48fb8102cbc13bec2d2133252ad674c6fc226a02e78026a167e5fd49d671ad426a50789b509356c3f3d700a774
SSDEEP

1536:Z6QFElP6n+gMQMOtEvwDpjQGYQbN/PKwNC4w28:Z6a+pOtEvwDpjtz4

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000002312d-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000002312d-12.dat	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-1-5-21-3844919115-497234255-166257750-1000\Control Panel\International\Geo\Nation	2024-02-21_6045e6c4b40822048c6691ec72807add_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1944	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 4204 wrote to memory of 1944	4204	2024-02-21_6045e6c4b40822048c6691ec72807add_cryptolocker.exe	81
PID 4204 wrote to memory of 1944	4204	2024-02-21_6045e6c4b40822048c6691ec72807add_cryptolocker.exe	81
PID 4204 wrote to memory of 1944	4204	2024-02-21_6045e6c4b40822048c6691ec72807add_cryptolocker.exe	81

C:\Users\Admin\AppData\Local\Temp\2024-02-21_6045e6c4b40822048c6691ec72807add_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-21_6045e6c4b40822048c6691ec72807add_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4204
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1944

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
94KB

MD5
c778e79e2dc1c19af4a7706ff6d51d43

SHA1
5f09561b32a4af201a88568189e5abe18a20f21e

SHA256
b8a7b08c697e6bfab316c071b83154fe7203c2ad6ebb3ff7b89681bdb1e08ad2

SHA512
8bbf7303a2783b8492feae58e29502bc03b6d4308ee32ff07e49f7a0d7e3e3d99ff6dc08d533856dd21d13cf9d3feae121b6a6cbaf37c423a18520bbb33a7f02

Download Submit
memory/4204-0-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4204-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4204-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download