344a09a623ef3a66f654051b03ad2117dcd418247eaa45197fd44281dc38d1ec

Analysis

max time kernel
140s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
03/02/2024, 13:34

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General

Target

2024-02-03_b541961035d9f8eea2e3df348f0196f9_cryptolocker.exe
Size

88KB
MD5

b541961035d9f8eea2e3df348f0196f9
SHA1

e8a5775993315188620574b99b8bf85b289dd7e9
SHA256

344a09a623ef3a66f654051b03ad2117dcd418247eaa45197fd44281dc38d1ec
SHA512

d927b4c17c6bd7a56035aa448a1585b71ac323f0c6cb00a793ee426b32c4381edc44a3d15ee9b6b946dfecf500a152fdac024e7464ac2df0e43f048d57cb31cb
SSDEEP

1536:vj+jsMQMOtEvwDpj5H8u8rBN6nqEZNi1OkQNX:vCjsIOtEvwDpj5H8zPsD

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00060000000231b6-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x00060000000231b6-12.dat	CryptoLocker_set1

Checks computer location settings 2 TTPs 2 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-1-5-21-1815711207-1844170477-3539718864-1000\Control Panel\International\Geo\Nation	2024-02-03_b541961035d9f8eea2e3df348f0196f9_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1815711207-1844170477-3539718864-1000\Control Panel\International\Geo\Nation	misid.exe

Executes dropped EXE 1 IoCs

pid	Process
1612	misid.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 452 wrote to memory of 1612	452	2024-02-03_b541961035d9f8eea2e3df348f0196f9_cryptolocker.exe	79
PID 452 wrote to memory of 1612	452	2024-02-03_b541961035d9f8eea2e3df348f0196f9_cryptolocker.exe	79
PID 452 wrote to memory of 1612	452	2024-02-03_b541961035d9f8eea2e3df348f0196f9_cryptolocker.exe	79

C:\Users\Admin\AppData\Local\Temp\2024-02-03_b541961035d9f8eea2e3df348f0196f9_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-03_b541961035d9f8eea2e3df348f0196f9_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:452
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  PID:1612

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\misid.exe

Filesize
88KB

MD5
a32e228dd8ee5000375c8efd1d74cbcc

SHA1
b3e4b23f901f44cf5f5847b57f30589b77492c23

SHA256
099cd3f67e4071f6d4df53ecee8d27274bb3d4b277b7d132db72039589013e51

SHA512
e3077021a7fc63932c7ec707535cd1adada82d3ec952368ba464ba82f988008114a5603b2f7adb1a3f2685ebfdd39387ff5a9afe4202142091974520b90247ea

Download Submit
memory/452-0-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/452-1-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/452-2-0x00000000021C0000-0x00000000021C6000-memory.dmp

Filesize
24KB

Download
memory/1612-19-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/1612-17-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download