608e854ed567ee9f5911e5929e6ae6b3fac55c74b006183224058172f6059430

Analysis

max time kernel
147s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
14/05/2024, 19:40

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General

Target

2024-05-14_b0c69808ea262de697a605150d7fdc79_cryptolocker.exe
Size

39KB
MD5

b0c69808ea262de697a605150d7fdc79
SHA1

285915982ad8a07ae2a8f243812c06cb4971d925
SHA256

608e854ed567ee9f5911e5929e6ae6b3fac55c74b006183224058172f6059430
SHA512

473a6c8a73f51dce3c0b5baeb8f8eb3e46a38359c92750c55c54d4b089dc5a0ef286254905f3c6452cc85a458eb41e22ccdeaecf86173d3b476039b3e98ac9bb
SSDEEP

768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITYf1m:qDdFJy3QMOtEvwDpjjWMl7Tqm

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/1720-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000b00000002340a-13.dat	CryptoLocker_rule2
behavioral2/memory/2884-19-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1720-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2884-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral2/memory/1720-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000b00000002340a-13.dat	CryptoLocker_set1
behavioral2/memory/2884-19-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/1720-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/2884-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral2/memory/1720-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/files/0x000b00000002340a-13.dat	UPX
behavioral2/memory/2884-19-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/1720-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/2884-27-0x0000000000500000-0x0000000000510000-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-1-5-21-711569230-3659488422-571408806-1000\Control Panel\International\Geo\Nation	2024-05-14_b0c69808ea262de697a605150d7fdc79_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2884	asih.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1720-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x000b00000002340a-13.dat	upx
behavioral2/memory/2884-19-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/1720-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/2884-27-0x0000000000500000-0x0000000000510000-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 1720 wrote to memory of 2884	1720	2024-05-14_b0c69808ea262de697a605150d7fdc79_cryptolocker.exe	85
PID 1720 wrote to memory of 2884	1720	2024-05-14_b0c69808ea262de697a605150d7fdc79_cryptolocker.exe	85
PID 1720 wrote to memory of 2884	1720	2024-05-14_b0c69808ea262de697a605150d7fdc79_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-05-14_b0c69808ea262de697a605150d7fdc79_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-14_b0c69808ea262de697a605150d7fdc79_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1720
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2884

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
39KB

MD5
293b2cceb500b6312f58bb33e59335e2

SHA1
9d5a90032f54322d7ee86154f499eeb518682ef6

SHA256
9fc30c3a7a5c444fdf8814c691484aa6b24882ff3449d3cb7521ff3dcb897f61

SHA512
5f9e6b4c41ffbabf0d0bc346d0a88d199796445a0ac88ad428d2929cd1d58b40c250a8c5161b5760dbe0ae31643ece4c105519fe143b5af2f634670042abe974

Download Submit
memory/1720-9-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/1720-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/1720-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/1720-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1720-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2884-19-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2884-20-0x0000000000680000-0x0000000000686000-memory.dmp

Filesize
24KB

Download
memory/2884-26-0x0000000000560000-0x0000000000566000-memory.dmp

Filesize
24KB

Download
memory/2884-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download