739e7b7f6b2d87c60b4bc132c0d562191dd2d2c808a37bf65cfcaf4f17458dcc

Analysis

max time kernel
93s
max time network
116s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
28/02/2024, 20:56

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General

Target

2024-02-28_eaaf13324f6fa44584bf34aa45382679_cryptolocker.exe
Size

48KB
MD5

eaaf13324f6fa44584bf34aa45382679
SHA1

633aa27373fb2bb949641af7c4f15b3354d93882
SHA256

739e7b7f6b2d87c60b4bc132c0d562191dd2d2c808a37bf65cfcaf4f17458dcc
SHA512

12c9fa2b4dd0014faf087ee4070980d34ceec9154bb51a769f3ab678081e8962c8c0df24aebeef4936bd3cfd441cd0590da14548f57bf78065e00b6e2f0c0b78
SSDEEP

768:xQz7yVEhs9+4uR1bytOOtEvwDpjWE6BLbjG9RzhwaNm:xj+VGMOtEvwDpjy+TQ

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/2388-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000700000001ebc7-13.dat	CryptoLocker_rule2
behavioral2/memory/2388-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3432-54-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/2388-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000700000001ebc7-13.dat	CryptoLocker_set1
behavioral2/memory/2388-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/3432-54-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 4 IoCs

resource	yara_rule
behavioral2/memory/2388-0-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x000700000001ebc7-13.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/2388-17-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/3432-54-0x0000000000500000-0x0000000000510000-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-1-5-21-566096764-1992588923-1249862864-1000\Control Panel\International\Geo\Nation	misid.exe
Key value queried	\REGISTRY\USER\S-1-5-21-566096764-1992588923-1249862864-1000\Control Panel\International\Geo\Nation	2024-02-28_eaaf13324f6fa44584bf34aa45382679_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3432	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 2388 wrote to memory of 3432	2388	2024-02-28_eaaf13324f6fa44584bf34aa45382679_cryptolocker.exe	87
PID 2388 wrote to memory of 3432	2388	2024-02-28_eaaf13324f6fa44584bf34aa45382679_cryptolocker.exe	87
PID 2388 wrote to memory of 3432	2388	2024-02-28_eaaf13324f6fa44584bf34aa45382679_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-02-28_eaaf13324f6fa44584bf34aa45382679_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-28_eaaf13324f6fa44584bf34aa45382679_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2388
- 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:3432

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
48KB

MD5
d5a61fc3afd273e7d130cfada7f9598a

SHA1
928190a4e662964dad4bfd51fc39b185a3958efa

SHA256
aa050166d6cd3c6d3fba69bd847cc389e9e227ebfb2c5693485963840bb9fbc8

SHA512
0904b11affa04e27f098204211aa6bdad6f23e79f282cb0cc60f683e10bfcd162a57f4e93438e1a8d91d20cd17caaa6fd55d4a366e4ec9316a85df1d51342d1c

Download Submit
memory/2388-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2388-1-0x00000000004C0000-0x00000000004C6000-memory.dmp

Filesize
24KB

Download
memory/2388-2-0x00000000004C0000-0x00000000004C6000-memory.dmp

Filesize
24KB

Download
memory/2388-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/2388-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3432-19-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

Download
memory/3432-21-0x0000000000550000-0x0000000000556000-memory.dmp

Filesize
24KB

Download
memory/3432-54-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download