954af40b8d0417c374d845f881080e76d2c8dd5204ff646ffef7c88bbc92163f

Analysis

max time kernel
144s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
04/02/2024, 17:34

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General

Target

2024-02-04_dbc34bc5ec493f1f677497fa259cc0ab_cryptolocker.exe
Size

50KB
MD5

dbc34bc5ec493f1f677497fa259cc0ab
SHA1

37ba37650a2a75be1ee98ceac9795baca84d9e88
SHA256

954af40b8d0417c374d845f881080e76d2c8dd5204ff646ffef7c88bbc92163f
SHA512

df442691cb305276c0982254793a03a99ad8a367e3ef15068dfb690d1378632671d658bda611c5f9ca615e873ec12d932f0939d47643a6fe57f1cc2cb59be5ce
SSDEEP

768:XS5nQJ24LR1bytOOtEvwDpjNbZ7uyA36S7MzF3FP:i5nkFGMOtEvwDpjNbwQEqV

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/4032-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000700000002320f-13.dat	CryptoLocker_rule2
behavioral2/memory/4032-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4460-54-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 2 IoCs

resource	yara_rule
behavioral2/memory/4032-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4460-54-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 4 IoCs

resource	yara_rule
behavioral2/memory/4032-0-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x000700000002320f-13.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/4032-17-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/4460-54-0x0000000000500000-0x000000000050F000-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-1-5-21-3803511929-1339359695-2191195476-1000\Control Panel\International\Geo\Nation	2024-02-04_dbc34bc5ec493f1f677497fa259cc0ab_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
4460	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 4032 wrote to memory of 4460	4032	2024-02-04_dbc34bc5ec493f1f677497fa259cc0ab_cryptolocker.exe	87
PID 4032 wrote to memory of 4460	4032	2024-02-04_dbc34bc5ec493f1f677497fa259cc0ab_cryptolocker.exe	87
PID 4032 wrote to memory of 4460	4032	2024-02-04_dbc34bc5ec493f1f677497fa259cc0ab_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-02-04_dbc34bc5ec493f1f677497fa259cc0ab_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-04_dbc34bc5ec493f1f677497fa259cc0ab_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4032
- 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:4460

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\misid.exe

Filesize
50KB

MD5
8f57907f5062f36857d3c5f30b5dadcf

SHA1
dbf6a8b47ec3a6f8fd1fe5e074d0a8408f3284db

SHA256
3d60f43cdd19786c0ac25730878fa4f55be92eed6564a5e16a9e32d9bea03494

SHA512
569cdd302f6e22ea194dcccdf8429bad6379d9e04a8c2dfe639c2b86df933e869069f1a74d239c7cbb5c23ad3630cf0f21652dcaa049238d7b38bbef65de3615

Download Submit
memory/4032-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/4032-1-0x0000000000600000-0x0000000000606000-memory.dmp

Filesize
24KB

Download
memory/4032-2-0x0000000000600000-0x0000000000606000-memory.dmp

Filesize
24KB

Download
memory/4032-3-0x00000000021C0000-0x00000000021C6000-memory.dmp

Filesize
24KB

Download
memory/4032-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/4460-19-0x0000000000590000-0x0000000000596000-memory.dmp

Filesize
24KB

Download
memory/4460-25-0x0000000000560000-0x0000000000566000-memory.dmp

Filesize
24KB

Download
memory/4460-54-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download