bff101067278aa9b061578ed55166ac550a48398a6799e663342f1866001b5ab

Analysis

max time kernel
148s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
29/02/2024, 05:04

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General

Target

2024-02-29_7e3800716ea57831b5b3104b6bd9a95e_cryptolocker.exe
Size

103KB
MD5

7e3800716ea57831b5b3104b6bd9a95e
SHA1

d25a5dbf5caf2eb33575defdf1abbbcb10247b86
SHA256

bff101067278aa9b061578ed55166ac550a48398a6799e663342f1866001b5ab
SHA512

4a99d6f2f1507c8871630a7ff5ba818d1637cad5e0dea06e0d31b5cb5032f5356d96b3856a7b34652b17330a56ebedd660387ff6b88ba6a81bf01f299c7bed33
SSDEEP

1536:V6QFElP6n+gMQMOtEvwDpjQGYQbN/PKwNgpwqWsvikFI:V6a+pOtEvwDpjtzb

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000001ebc7-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000001ebc7-12.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-1-5-21-566096764-1992588923-1249862864-1000\Control Panel\International\Geo\Nation	2024-02-29_7e3800716ea57831b5b3104b6bd9a95e_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4792	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 1224 wrote to memory of 4792	1224	2024-02-29_7e3800716ea57831b5b3104b6bd9a95e_cryptolocker.exe	89
PID 1224 wrote to memory of 4792	1224	2024-02-29_7e3800716ea57831b5b3104b6bd9a95e_cryptolocker.exe	89
PID 1224 wrote to memory of 4792	1224	2024-02-29_7e3800716ea57831b5b3104b6bd9a95e_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-02-29_7e3800716ea57831b5b3104b6bd9a95e_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-29_7e3800716ea57831b5b3104b6bd9a95e_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1224
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4792

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
103KB

MD5
186697d5749bcc0e239e03bbd6b56914

SHA1
7cc21d46c2a04292a41b05e3c3393daf1d2dedf5

SHA256
c140cc5fe588e1be34ce798af44d07dca67410093529d3e1c0a3e01bb4041211

SHA512
c1292d337f95b54d67d28be58a4b94d37740fbda113f6ec69a72d319e31d7cd06c9f58edcc51ede9b86a63dda82ab647a0fe02466f07497aff663220bfd0cf25

Download Submit
memory/1224-0-0x00000000004C0000-0x00000000004C6000-memory.dmp

Filesize
24KB

Download
memory/1224-1-0x00000000004C0000-0x00000000004C6000-memory.dmp

Filesize
24KB

Download
memory/1224-2-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/4792-17-0x00000000005B0000-0x00000000005B6000-memory.dmp

Filesize
24KB

Download
memory/4792-20-0x0000000000590000-0x0000000000596000-memory.dmp

Filesize
24KB

Download