b474e4a2123c8ee0b269c3059ad6319e8f8fb6bbeefbf1ad120e90c16a5c6159

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
29/03/2024, 16:36

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General

Target

2024-03-29_2fcfe5fc16bb7d0d246a506cdbc83cce_cryptolocker.exe
Size

46KB
MD5

2fcfe5fc16bb7d0d246a506cdbc83cce
SHA1

6b5413586aeb8aaf9d9a72e7507072a854551f17
SHA256

b474e4a2123c8ee0b269c3059ad6319e8f8fb6bbeefbf1ad120e90c16a5c6159
SHA512

ccc44f95e37409db68820c1bef71fdf2ce981949bcd978ba133f850b6bb79344d003dff61619a5ed31b1af408e0211ef1f1ca9608aee14b4e2873ddd20c56f3a
SSDEEP

768:wHGGaSawqnwjRQ6ESlmFOsPoOdQtOOtEvwDpjm6j4AYsqSh+DETkedmhXSj:YGzl5wjRQBBOsP1QMOtEvwDpjl39+D+l

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/1996-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000c00000002304c-13.dat	CryptoLocker_rule2
behavioral2/memory/3720-18-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1996-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/1996-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000c00000002304c-13.dat	CryptoLocker_set1
behavioral2/memory/3720-18-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/memory/1996-17-0x0000000000500000-0x000000000050B000-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-1-5-21-3270530367-132075249-2153716227-1000\Control Panel\International\Geo\Nation	2024-03-29_2fcfe5fc16bb7d0d246a506cdbc83cce_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3720	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 1996 wrote to memory of 3720	1996	2024-03-29_2fcfe5fc16bb7d0d246a506cdbc83cce_cryptolocker.exe	85
PID 1996 wrote to memory of 3720	1996	2024-03-29_2fcfe5fc16bb7d0d246a506cdbc83cce_cryptolocker.exe	85
PID 1996 wrote to memory of 3720	1996	2024-03-29_2fcfe5fc16bb7d0d246a506cdbc83cce_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-03-29_2fcfe5fc16bb7d0d246a506cdbc83cce_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-29_2fcfe5fc16bb7d0d246a506cdbc83cce_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1996
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3720

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
46KB

MD5
2359254efe317b8a619a2b533de9fce1

SHA1
ef85bb8da48ff8b800c43224c4ee24bc6850029a

SHA256
2d1128b891241dde42b8fd7691739875664b3ba41cd4b1c49f6e091b961aad9c

SHA512
2422a078881e6d78dbe01f1f926a01e26e1c4b350babeba08a651ae8d30cabcb11361cf5b37e0af1d8f424f8ca55f24674f57bc0a04d7da8301f1feddca4b862

Download Submit
memory/1996-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/1996-1-0x00000000006F0000-0x00000000006F6000-memory.dmp

Filesize
24KB

Download
memory/1996-2-0x00000000006F0000-0x00000000006F6000-memory.dmp

Filesize
24KB

Download
memory/1996-3-0x0000000000710000-0x0000000000716000-memory.dmp

Filesize
24KB

Download
memory/1996-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/3720-18-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/3720-20-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/3720-26-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download