4a29d9dd1bc893ad8766f52e7d5959f30c25003413ff6e4e4a173a4e01563545

Analysis

max time kernel
144s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
25/01/2024, 20:29

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General

Target

2024-01-25_9c44c8a0d650d6b47fdd098e99df08f9_cryptolocker.exe
Size

38KB
MD5

9c44c8a0d650d6b47fdd098e99df08f9
SHA1

afc4093de5ec8a76bc74a4963954110b8e51dd09
SHA256

4a29d9dd1bc893ad8766f52e7d5959f30c25003413ff6e4e4a173a4e01563545
SHA512

ecfb54150386d6e0130359efc96be65848c61710d94c1e13946ecc64bbcd4c8bb948feeebe13831777e52f8174abd85123f2d71bfd07c73acd91a4c5c089f2e4
SSDEEP

768:XS5nQJ24LR1bytOOtEvwDpj66BLtldJQBgn:i5nkFGMOtEvwDpjn/JQc

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/1096-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0007000000023237-13.dat	CryptoLocker_rule2
behavioral2/memory/2400-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1096-18-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2400-55-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral2/memory/2400-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/1096-18-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/2400-55-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 5 IoCs

resource	yara_rule
behavioral2/memory/1096-0-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x0007000000023237-13.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/2400-17-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/1096-18-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/2400-55-0x0000000000500000-0x000000000050F000-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-1-5-21-3803511929-1339359695-2191195476-1000\Control Panel\International\Geo\Nation	2024-01-25_9c44c8a0d650d6b47fdd098e99df08f9_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3803511929-1339359695-2191195476-1000\Control Panel\International\Geo\Nation	misid.exe

Executes dropped EXE 1 IoCs

pid	Process
2400	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 1096 wrote to memory of 2400	1096	2024-01-25_9c44c8a0d650d6b47fdd098e99df08f9_cryptolocker.exe	86
PID 1096 wrote to memory of 2400	1096	2024-01-25_9c44c8a0d650d6b47fdd098e99df08f9_cryptolocker.exe	86
PID 1096 wrote to memory of 2400	1096	2024-01-25_9c44c8a0d650d6b47fdd098e99df08f9_cryptolocker.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-01-25_9c44c8a0d650d6b47fdd098e99df08f9_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-25_9c44c8a0d650d6b47fdd098e99df08f9_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1096
- 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:2400

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
169125640bdb54b0cd71aec88933703a

SHA1
67431cb095b547544b290185b2ea78e4fb9ad1d7

SHA256
6af31235e0ed65fe62668e888d51a82031e9e241ed9e1149311c9961a381d3e5

SHA512
778fb91eba097f41c609e2e38efa9e9ff5f6f15e74580ec78fdd24a14353f94c7ccba571808a4f590cdb87293f65c92b76f1e05cb66f13ffce205164ed6fa204

Download Submit
memory/1096-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1096-1-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/1096-2-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/1096-3-0x0000000000600000-0x0000000000606000-memory.dmp

Filesize
24KB

Download
memory/1096-18-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2400-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2400-20-0x00000000006D0000-0x00000000006D6000-memory.dmp

Filesize
24KB

Download
memory/2400-22-0x0000000000560000-0x0000000000566000-memory.dmp

Filesize
24KB

Download
memory/2400-55-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download