db1f558858708ef6bb5d0361d19684926437bb9995c22168aca0d6c8f029b059

Analysis

max time kernel
92s
max time network
161s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
04/02/2024, 03:49

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General

Target

2024-02-04_a01ad8aef189854014da85ec7962d5de_cryptolocker.exe
Size

39KB
MD5

a01ad8aef189854014da85ec7962d5de
SHA1

1a10ad75ea3c0c3e5d5873445679d4eeca7bee96
SHA256

db1f558858708ef6bb5d0361d19684926437bb9995c22168aca0d6c8f029b059
SHA512

4ed7cb97546db1a3d3c62ddf7cc98acc6794ffe17a539e2f814758933646516a4f3814743e91abf436d5036aa11e6a5bc7b9bb8c6293c737c4163cff745ecc16
SSDEEP

384:60VkMq01bJ3wtEwPS8HLEh+Jagz+3be+26aIIcVRYpetOOtEvwDpjqIGRmdHzOOK:6Qz7yVEhs9+4OR7tOOtEvwDpjLHqh6/c

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/1944-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0007000000023116-13.dat	CryptoLocker_rule2
behavioral2/memory/1944-14-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2168-54-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/1944-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0007000000023116-13.dat	CryptoLocker_set1
behavioral2/memory/1944-14-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/2168-54-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 4 IoCs

resource	yara_rule
behavioral2/memory/1944-0-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x0007000000023116-13.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/1944-14-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/2168-54-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress

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-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation	2024-02-04_a01ad8aef189854014da85ec7962d5de_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation	misid.exe

Executes dropped EXE 1 IoCs

pid	Process
2168	misid.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 1944 wrote to memory of 2168	1944	2024-02-04_a01ad8aef189854014da85ec7962d5de_cryptolocker.exe	85
PID 1944 wrote to memory of 2168	1944	2024-02-04_a01ad8aef189854014da85ec7962d5de_cryptolocker.exe	85
PID 1944 wrote to memory of 2168	1944	2024-02-04_a01ad8aef189854014da85ec7962d5de_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-02-04_a01ad8aef189854014da85ec7962d5de_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-04_a01ad8aef189854014da85ec7962d5de_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1944
- 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:2168

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
39KB

MD5
d43847283cc55623264ae7125804086f

SHA1
512ff584816ea18befe6f8a4f7662bd84425b6b2

SHA256
daf0be17f445a97636b39b697e564d93a3577d8feed41989b4fb7cef65f05195

SHA512
647cb2b793d170a491228bfe8c6714e12054da00841befe84d5b52dc4804bb2541165f61dca1c41710b84f75ed401342cc86954afe366d89b63a26370cb36531

Download Submit
memory/1944-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1944-1-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/1944-2-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/1944-3-0x0000000000600000-0x0000000000606000-memory.dmp

Filesize
24KB

Download
memory/1944-14-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2168-19-0x0000000000510000-0x0000000000516000-memory.dmp

Filesize
24KB

Download
memory/2168-23-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/2168-54-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download