a73a48b15f7f6bd4e2f065dc73e1f6e3b458c9ff3f7d472886a6bfa51675925a

Analysis

max time kernel
148s
max time network
150s
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, 23:29

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General

Target

2024-02-21_b32a8deb43a523af9c852dd2242729fc_cryptolocker.exe
Size

128KB
MD5

b32a8deb43a523af9c852dd2242729fc
SHA1

acbd13e3608d77ffe8025f42e06e5905bb2fc21d
SHA256

a73a48b15f7f6bd4e2f065dc73e1f6e3b458c9ff3f7d472886a6bfa51675925a
SHA512

e8eeacaa51f5ff8493e5a86ef2ecc229aeea62214eec0f26809b2dc9fbb9ebc1296f38b3fd5af7f249aed2fd6fe3c7eaab8f7b22ead26a8367bf35f4e505d1c0
SSDEEP

1536:V6QFElP6n+gMQMOtEvwDpjQGYQbN/PKwNgp699GNtL1eQ:V6a+pOtEvwDpjtzG

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000800000002324c-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000800000002324c-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-1-5-21-910440534-423636034-2318342392-1000\Control Panel\International\Geo\Nation	2024-02-21_b32a8deb43a523af9c852dd2242729fc_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2400	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 3880 wrote to memory of 2400	3880	2024-02-21_b32a8deb43a523af9c852dd2242729fc_cryptolocker.exe	84
PID 3880 wrote to memory of 2400	3880	2024-02-21_b32a8deb43a523af9c852dd2242729fc_cryptolocker.exe	84
PID 3880 wrote to memory of 2400	3880	2024-02-21_b32a8deb43a523af9c852dd2242729fc_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-02-21_b32a8deb43a523af9c852dd2242729fc_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-21_b32a8deb43a523af9c852dd2242729fc_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3880
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2400

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
128KB

MD5
a304a79c9df77e430a07541f3d23557b

SHA1
0f1a3190fd081223da3cb25d1732af7d59f99338

SHA256
68f1b10412f2f062610d194bdadc6e2a084c84ffde7e00d233500a527e5f7247

SHA512
d65f5a59a072a0c4626d35bbf0057ff08d7f07f55aaf7c46363cac3d61bd044bcb8a6c13cccb68458b40f57625dcbe56936ad4d3c11d7c59c90fa3e10f28df58

Download Submit
memory/2400-17-0x0000000000760000-0x0000000000766000-memory.dmp

Filesize
24KB

Download
memory/2400-22-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/3880-0-0x0000000000620000-0x0000000000626000-memory.dmp

Filesize
24KB

Download
memory/3880-1-0x0000000000620000-0x0000000000626000-memory.dmp

Filesize
24KB

Download
memory/3880-2-0x0000000000650000-0x0000000000656000-memory.dmp

Filesize
24KB

Download