ce4f2aa065680454d63d36cad9b12defac64c157611df15b9c33133b62f2f309

Analysis

max time kernel
148s
max time network
160s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
28/06/2024, 21:24

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General

Target

2024-06-28_30f81edb9751da6663ca07bb278da46f_cryptolocker.exe
Size

48KB
MD5

30f81edb9751da6663ca07bb278da46f
SHA1

80b07159d4a18a43b41023045804ce260a183782
SHA256

ce4f2aa065680454d63d36cad9b12defac64c157611df15b9c33133b62f2f309
SHA512

040541d6e1bc5b69ace542eef7752b187255a09a54356691a0ec0728213a3a68b39edf7a1b80454ad795deb69f913d622f6d1ce902b45feca39e6008ad5e91ac
SSDEEP

768:P6LsoEEeegiZPvEhHS5+Mh/QtOOtEvwDpjBpaD3TUogs/VXpAPcG:P6QFElP6k+MRQMOtEvwDpjBQpVXm

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/4092-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0009000000023540-13.dat	CryptoLocker_rule2
behavioral2/memory/4092-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2444-26-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/4092-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0009000000023540-13.dat	CryptoLocker_set1
behavioral2/memory/4092-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/memory/2444-26-0x0000000000500000-0x000000000050B000-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-1-5-21-1181767204-2009306918-3718769404-1000\Control Panel\International\Geo\Nation	2024-06-28_30f81edb9751da6663ca07bb278da46f_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2444	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 4092 wrote to memory of 2444	4092	2024-06-28_30f81edb9751da6663ca07bb278da46f_cryptolocker.exe	88
PID 4092 wrote to memory of 2444	4092	2024-06-28_30f81edb9751da6663ca07bb278da46f_cryptolocker.exe	88
PID 4092 wrote to memory of 2444	4092	2024-06-28_30f81edb9751da6663ca07bb278da46f_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-06-28_30f81edb9751da6663ca07bb278da46f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-28_30f81edb9751da6663ca07bb278da46f_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4092
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2444

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 --field-trial-handle=4332,i,15721081447618313297,6839074028983272033,262144 --variations-seed-version --mojo-platform-channel-handle=1340 /prefetch:8
1⤵
PID:1600

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
48KB

MD5
e04f1b2d45e1763e1e3327b9e6180d72

SHA1
064afd515bf68927d208d41e6befe9642e366e1a

SHA256
62416d0792cb09a5ba2919f0235584f915460e503b28edd848d0b3564865dcf9

SHA512
93c7d4c25e848ea59c5dd13530249276496b84c144af54fc861bb46e294b8436ce2d7c1012fe99fa866cc24f57d7746743feef8c3e5a7363f0d15f9946822050

Download Submit
memory/2444-25-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2444-19-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/2444-26-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/4092-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/4092-2-0x0000000000850000-0x0000000000856000-memory.dmp

Filesize
24KB

Download
memory/4092-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/4092-9-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/4092-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download