719279d008f87fee548b08810e8cb131a8d7af8eed5ae2d2025199dd1d517889

Analysis

max time kernel
88s
max time network
124s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
22/01/2024, 17:42

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General

Target

2024-01-22_042d9a5571a84d265713abb9f7283342_cryptolocker.exe
Size

57KB
MD5

042d9a5571a84d265713abb9f7283342
SHA1

e1b24cf96782afd4d77f6645a590ece5f978dba3
SHA256

719279d008f87fee548b08810e8cb131a8d7af8eed5ae2d2025199dd1d517889
SHA512

8af34fc2e421bb5ab04f0295fb795053381f6ada6104ba4bb6744317f0c9ec2a83dc370a09de1ba7f73339c5b51d1f82aa2fc8affa548f19dbac24c2a013fd29
SSDEEP

768:xQz7yVEhs9+4uR1bytOOtEvwDpjWfbZgBh8i6g7Gowfj6EiO2C:xj+VGMOtEvwDpjubEgd

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/2616-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0007000000023224-13.dat	CryptoLocker_rule2
behavioral2/memory/2616-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1256-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1256-55-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral2/memory/2616-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0007000000023224-13.dat	CryptoLocker_set1
behavioral2/memory/2616-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/1256-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/1256-55-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 5 IoCs

resource	yara_rule
behavioral2/memory/2616-0-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x0007000000023224-13.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/2616-18-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/1256-17-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/1256-55-0x0000000000500000-0x0000000000510000-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	2024-01-22_042d9a5571a84d265713abb9f7283342_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
1256	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 2616 wrote to memory of 1256	2616	2024-01-22_042d9a5571a84d265713abb9f7283342_cryptolocker.exe	89
PID 2616 wrote to memory of 1256	2616	2024-01-22_042d9a5571a84d265713abb9f7283342_cryptolocker.exe	89
PID 2616 wrote to memory of 1256	2616	2024-01-22_042d9a5571a84d265713abb9f7283342_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-01-22_042d9a5571a84d265713abb9f7283342_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-22_042d9a5571a84d265713abb9f7283342_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2616
- 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:1256

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
57KB

MD5
70f06b11373053c35685ddd9e26e764b

SHA1
8872b891795facf1b27b7278cceb82ec2fd34be5

SHA256
84a1e08c5a03240b42807ea453487e6a1cfd3e2c5e6d0648649510b753826057

SHA512
ca5e22cbb83e6eb54c49dff8f6e5f1ca262b11ce7b6b2dfb0894c72fa0e1db2420eb6825ed1f924ed3a9ebd08f18fc30a059441bbd9ee2b4abf4a743660a2748

Download Submit
memory/1256-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1256-21-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/1256-20-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/1256-55-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2616-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2616-1-0x00000000006F0000-0x00000000006F6000-memory.dmp

Filesize
24KB

Download
memory/2616-2-0x00000000021B0000-0x00000000021B6000-memory.dmp

Filesize
24KB

Download
memory/2616-3-0x00000000006F0000-0x00000000006F6000-memory.dmp

Filesize
24KB

Download
memory/2616-18-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download