1f99645a6818bc435e3dc9113b6d8e6a8bccad5d5a32f819669db64c0f77b9c4

Analysis

max time kernel
150s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
16/03/2024, 12:38

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General

Target

2024-03-16_869d44e2e607c166e74801e067756b18_cryptolocker.exe
Size

47KB
MD5

869d44e2e607c166e74801e067756b18
SHA1

2e1e7a4b6afa3a8089b0c057a12c94e22a38e8dd
SHA256

1f99645a6818bc435e3dc9113b6d8e6a8bccad5d5a32f819669db64c0f77b9c4
SHA512

5d063bbdf298707776ab5b8b543a6b8fced355e8efb90688ff1e2ba3d14278a2986460dea14610612f413e4fe221347999cd536be59d708d19a428b54946cf12
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBaaEqbIu556Blvj:X6QFElP6n+gJQMOtEvwDpjB0GIWSlvj

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000022745-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000022745-12.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-1-5-21-3045580317-3728985860-206385570-1000\Control Panel\International\Geo\Nation	2024-03-16_869d44e2e607c166e74801e067756b18_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
924	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 3876 wrote to memory of 924	3876	2024-03-16_869d44e2e607c166e74801e067756b18_cryptolocker.exe	93
PID 3876 wrote to memory of 924	3876	2024-03-16_869d44e2e607c166e74801e067756b18_cryptolocker.exe	93
PID 3876 wrote to memory of 924	3876	2024-03-16_869d44e2e607c166e74801e067756b18_cryptolocker.exe	93

C:\Users\Admin\AppData\Local\Temp\2024-03-16_869d44e2e607c166e74801e067756b18_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-16_869d44e2e607c166e74801e067756b18_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3876
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:924

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
47KB

MD5
82b6ccd23658ca728dc6fc2c228ae734

SHA1
b44101b62102b30eb11a5dba6dd5373fa4e6bcb3

SHA256
3672b6847ba3434aa2242f59d4a93cf627926b51be30a7b386c7709225171758

SHA512
a75dea7dffa14cd3adeefbd8dce36d46e793f4d4876ce5cd0b0f2a4b7c38aa48a3aca5e652c830a3dac3f5e0994961dc6464be14e19e822f3d31592a61a21db4

Download Submit
memory/924-17-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/924-19-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/3876-0-0x00000000005B0000-0x00000000005B6000-memory.dmp

Filesize
24KB

Download
memory/3876-1-0x00000000005B0000-0x00000000005B6000-memory.dmp

Filesize
24KB

Download
memory/3876-2-0x00000000005D0000-0x00000000005D6000-memory.dmp

Filesize
24KB

Download