9b73f10d6388baeee3591888ecd27eaf80150765b668fb97483c18f57e51f4e2

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240611-en
resource tags

arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
submitted
29/06/2024, 00:35

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General

Target

2024-06-29_4c0bdee5b79fb534344298fecd83829b_cryptolocker.exe
Size

40KB
MD5

4c0bdee5b79fb534344298fecd83829b
SHA1

25f5b1a124dde7dbc6a4cc520d0ab2e6e7827164
SHA256

9b73f10d6388baeee3591888ecd27eaf80150765b668fb97483c18f57e51f4e2
SHA512

e8bae2c6dced421a6506c44ba3df55ef14001ef07ab3f1dd34ab2d25d7626db75fd7b7a453fda6e9ae8ea40501ab75aa96c34714cad761145368f36083485567
SSDEEP

768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITYabDbGx:qDdFJy3QMOtEvwDpjjWMl7Tdyx

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/1640-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0005000000022f58-13.dat	CryptoLocker_rule2
behavioral2/memory/1640-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3372-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/1640-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0005000000022f58-13.dat	CryptoLocker_set1
behavioral2/memory/1640-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/3372-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/1640-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/files/0x0005000000022f58-13.dat	UPX
behavioral2/memory/1640-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/3372-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

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-1-5-21-3169499791-3545231813-3156325206-1000\Control Panel\International\Geo\Nation	2024-06-29_4c0bdee5b79fb534344298fecd83829b_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3372	asih.exe

UPX packed file 4 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/1640-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x0005000000022f58-13.dat	upx
behavioral2/memory/1640-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/3372-26-0x0000000000500000-0x0000000000510000-memory.dmp	upx

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 1640 wrote to memory of 3372	1640	2024-06-29_4c0bdee5b79fb534344298fecd83829b_cryptolocker.exe	84
PID 1640 wrote to memory of 3372	1640	2024-06-29_4c0bdee5b79fb534344298fecd83829b_cryptolocker.exe	84
PID 1640 wrote to memory of 3372	1640	2024-06-29_4c0bdee5b79fb534344298fecd83829b_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-06-29_4c0bdee5b79fb534344298fecd83829b_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-29_4c0bdee5b79fb534344298fecd83829b_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1640
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3372

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
40KB

MD5
dad2e9ab970cba73561037c783806223

SHA1
aa5aa49fecc201606cb5850f3409cf13f84feee9

SHA256
f6b500db736e86a219b186d70f932e0e84a3055658658e7c9d2dfed3d5132531

SHA512
9226331051a6223e2a420bfa8b125ab33df3eeb569ae90c60200ec31aec267930c49dff623edeac525fb1d36084a3b560a8377a2ff890474a88be37760b03441

Download Submit
memory/1640-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1640-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/1640-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/1640-9-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/1640-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3372-19-0x0000000000750000-0x0000000000756000-memory.dmp

Filesize
24KB

Download
memory/3372-25-0x0000000000730000-0x0000000000736000-memory.dmp

Filesize
24KB

Download
memory/3372-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download