8f7b0423b52b06483a60fbdbb5d7a6bd74e19b9e2a9801f0c9120874156a04ac

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
22-05-2024 02:44

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General

Target

2024-05-22_ae212c5419219f9ef2728ec62d6c4c4d_cryptolocker.exe
Size

76KB
MD5

ae212c5419219f9ef2728ec62d6c4c4d
SHA1

2bb23c5c7ff67afadf01a0c8195d66a22943a797
SHA256

8f7b0423b52b06483a60fbdbb5d7a6bd74e19b9e2a9801f0c9120874156a04ac
SHA512

a16df69b07758b4396feedeba8409bb12a36bce13f803cfa94129ed1f216b86a3c96944e4a6bee8a7c1f7ad1fb4b710a7439bc1359813cdcaf7b3be82bc641d6
SSDEEP

1536:X6QFElP6n+gJQMOtEvwDpjBZYTjipvF2bx1RUv:X6a+SOtEvwDpjBZYvQd2G

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\asih.exe	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

Processes:

2024-05-22_ae212c5419219f9ef2728ec62d6c4c4d_cryptolocker.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1162180587-977231257-2194346871-1000\Control Panel\International\Geo\Nation	2024-05-22_ae212c5419219f9ef2728ec62d6c4c4d_cryptolocker.exe

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

3788 asih.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
3788	asih.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-05-22_ae212c5419219f9ef2728ec62d6c4c4d_cryptolocker.exe

description	pid	process	target process
PID 1792 wrote to memory of 3788	1792	2024-05-22_ae212c5419219f9ef2728ec62d6c4c4d_cryptolocker.exe	asih.exe
PID 1792 wrote to memory of 3788	1792	2024-05-22_ae212c5419219f9ef2728ec62d6c4c4d_cryptolocker.exe	asih.exe
PID 1792 wrote to memory of 3788	1792	2024-05-22_ae212c5419219f9ef2728ec62d6c4c4d_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-22_ae212c5419219f9ef2728ec62d6c4c4d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-22_ae212c5419219f9ef2728ec62d6c4c4d_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1792

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
2⤵
- Executes dropped EXE
PID:3788

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\asih.exe
Filesize
76KB

MD5
c68b94cbed2dffcce6872e2632ca667a

SHA1
ee3c0b24bb206dc33f34af15044f46b5b66e83c8

SHA256
3da94650c54275bf62dc681c58d443a97d62522e555f0f535b589c3b9556569a

SHA512
b502ce32b55a24c8e09d1eadbbd49a42f138aaa1d3a3e475c4dc6cf609d6e3abd17622dd26d0b87c214e283ec41b2fa5f0886fd523015b2a92f6ce306ba1fad3

Download Submit
memory/1792-0-0x0000000002050000-0x0000000002056000-memory.dmp

Filesize
24KB

Download
memory/1792-1-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

Download
memory/1792-8-0x0000000002050000-0x0000000002056000-memory.dmp

Filesize
24KB

Download
memory/3788-17-0x00000000020D0000-0x00000000020D6000-memory.dmp

Filesize
24KB

Download
memory/3788-18-0x00000000020F0000-0x00000000020F6000-memory.dmp

Filesize
24KB

Download