f30b5fe97d5f0d47b0d714e752ba3f33f59feaacff561645651963a6486ce93a

Analysis

max time kernel
155s
max time network
171s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
09-05-2024 23:26

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General

Target

2024-05-09_7173bb82bcad998f6bca13ed45b4c792_cryptolocker.exe
Size

51KB
MD5

7173bb82bcad998f6bca13ed45b4c792
SHA1

04d129ede3d54bbf2250fedb97ef6be361c98f9e
SHA256

f30b5fe97d5f0d47b0d714e752ba3f33f59feaacff561645651963a6486ce93a
SHA512

f48f4bfedc3ba7c69215aaffe0a4091d948e0b94b684dfaf380d693b48ceecc8d8316f4e1ba6d1a5a3f9464e3ebd89a1136ece0b0acff690876c60a22895aef4
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/BtOOtEvwDpjBVaD3E09vxcOQ:X6QFElP6n+gJBMOtEvwDpjBtExLQ

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000002324e-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000002324e-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-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	2024-05-09_7173bb82bcad998f6bca13ed45b4c792_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2856	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 3604 wrote to memory of 2856	3604	2024-05-09_7173bb82bcad998f6bca13ed45b4c792_cryptolocker.exe	94
PID 3604 wrote to memory of 2856	3604	2024-05-09_7173bb82bcad998f6bca13ed45b4c792_cryptolocker.exe	94
PID 3604 wrote to memory of 2856	3604	2024-05-09_7173bb82bcad998f6bca13ed45b4c792_cryptolocker.exe	94

C:\Users\Admin\AppData\Local\Temp\2024-05-09_7173bb82bcad998f6bca13ed45b4c792_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-09_7173bb82bcad998f6bca13ed45b4c792_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3604
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2856

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=1412 --field-trial-handle=2304,i,6987730730348465820,3913273227385401271,262144 --variations-seed-version /prefetch:8
1⤵
PID:648

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
52KB

MD5
891ea7ad71804a839fb650c863d2228d

SHA1
160e62c7433825baf9b9c552903e53d4901dc333

SHA256
a3254fa3830ad3daf630292b27ecc88b630612e71aa75031c83a480be0c54d86

SHA512
57534617b22e187d2fb61b417c1c3f0e9ee9814dc35a48e42b0b61795e8f53b6f4c4ca7062f7508fc3ba3b4c2c63f539f548a34a67e07f7c08eda0f8b922f2bf

Download Submit
memory/2856-17-0x00000000020D0000-0x00000000020D6000-memory.dmp

Filesize
24KB

Download
memory/2856-18-0x0000000002100000-0x0000000002106000-memory.dmp

Filesize
24KB

Download
memory/3604-0-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/3604-1-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/3604-2-0x0000000000540000-0x0000000000546000-memory.dmp

Filesize
24KB

Download