ce6386af7a0e5608a824a97ac59ce703706110fdb525eb48b3804b7e8354e94d

Analysis

max time kernel
150s
max time network
149s
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, 04:46

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General

Target

2024-02-29_4582ed3d8217d6c5ae80de47faaefc31_cryptolocker.exe
Size

61KB
MD5

4582ed3d8217d6c5ae80de47faaefc31
SHA1

c04758345c0e5f8fd7cfdad948abe63b800f0a9d
SHA256

ce6386af7a0e5608a824a97ac59ce703706110fdb525eb48b3804b7e8354e94d
SHA512

4b997937a7d8b0b7dcd3f2640eb2f7f08df89c3624c7802f70f69bdac9fbbd0d51c795614461096d410183d862b5d1b6746dd9e03a95c63fcdfe8cc8ce033f03
SSDEEP

768:zQz7yVEhs9+syJP6ntOOtEvwDpjFelaB7yBEY9Su8F5mnVwQ:zj+soPSMOtEvwDpj4kpmeLmnd

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/4224-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000700000001ebc7-13.dat	CryptoLocker_rule2
behavioral2/memory/4224-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3708-54-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/4224-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000700000001ebc7-13.dat	CryptoLocker_set1
behavioral2/memory/4224-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/3708-54-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/4224-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/files/0x000700000001ebc7-13.dat	UPX
behavioral2/memory/4224-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/3708-54-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

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-1-5-21-566096764-1992588923-1249862864-1000\Control Panel\International\Geo\Nation	2024-02-29_4582ed3d8217d6c5ae80de47faaefc31_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-566096764-1992588923-1249862864-1000\Control Panel\International\Geo\Nation	misid.exe

Executes dropped EXE 1 IoCs

pid	Process
3708	misid.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4224-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x000700000001ebc7-13.dat	upx
behavioral2/memory/4224-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/3708-54-0x0000000000500000-0x0000000000510000-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 4224 wrote to memory of 3708	4224	2024-02-29_4582ed3d8217d6c5ae80de47faaefc31_cryptolocker.exe	90
PID 4224 wrote to memory of 3708	4224	2024-02-29_4582ed3d8217d6c5ae80de47faaefc31_cryptolocker.exe	90
PID 4224 wrote to memory of 3708	4224	2024-02-29_4582ed3d8217d6c5ae80de47faaefc31_cryptolocker.exe	90

C:\Users\Admin\AppData\Local\Temp\2024-02-29_4582ed3d8217d6c5ae80de47faaefc31_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-29_4582ed3d8217d6c5ae80de47faaefc31_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4224
- 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:3708

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
62KB

MD5
6783a435aeb6f9f11bde9fddfb4458be

SHA1
15218ba7544219aa7c54bd245c02d0ea9d8ad374

SHA256
fac7ab3d1f4427a3e0200d25c727e0e0573f305ed3d5878ef604c31be2ea78d6

SHA512
e6f8debb4019ac41274336cb59302b19eea8313dbe3323f90aefbf90260dcd5254f223e06763c45e3e6f480ccf7a80392cf6098237c145caa300f90ed5e6e137

Download Submit
memory/3708-19-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/3708-21-0x0000000000690000-0x0000000000696000-memory.dmp

Filesize
24KB

Download
memory/3708-54-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4224-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4224-1-0x00000000004C0000-0x00000000004C6000-memory.dmp

Filesize
24KB

Download
memory/4224-2-0x00000000004C0000-0x00000000004C6000-memory.dmp

Filesize
24KB

Download
memory/4224-3-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/4224-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download