36b5591d768d76d1e81212e848e64004584a4f3d84bc8c3a5d524318034cb8bf

Analysis

max time kernel
138s
max time network
144s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
12/02/2024, 16:44

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General

Target

2024-02-12_4019e19c85dc8ff31bafe3ad3b418ade_cryptolocker.exe
Size

39KB
MD5

4019e19c85dc8ff31bafe3ad3b418ade
SHA1

107d218abf0bdb7e0edc750f8f9c9785b2d5936a
SHA256

36b5591d768d76d1e81212e848e64004584a4f3d84bc8c3a5d524318034cb8bf
SHA512

a335466e28b50570418bea116814d98e6fb0cdcf6371706183bd6724c4a9a1be28c8a4f44024441bd98d4073941b9382c5e7384e8dcc9a193a6d23f70f9a42ab
SSDEEP

768:6Qz7yVEhs9+4OR7tOOtEvwDpjLHqh6/fK:6j+1NMOtEvwDpjrRHK

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/548-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0007000000023121-13.dat	CryptoLocker_rule2
behavioral2/memory/548-19-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4600-54-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/548-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0007000000023121-13.dat	CryptoLocker_set1
behavioral2/memory/548-19-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4600-54-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 4 IoCs

resource	yara_rule
behavioral2/memory/548-0-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x0007000000023121-13.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/548-19-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/4600-54-0x0000000000500000-0x000000000050F000-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-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation	2024-02-12_4019e19c85dc8ff31bafe3ad3b418ade_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation	misid.exe

Executes dropped EXE 1 IoCs

pid	Process
4600	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 548 wrote to memory of 4600	548	2024-02-12_4019e19c85dc8ff31bafe3ad3b418ade_cryptolocker.exe	84
PID 548 wrote to memory of 4600	548	2024-02-12_4019e19c85dc8ff31bafe3ad3b418ade_cryptolocker.exe	84
PID 548 wrote to memory of 4600	548	2024-02-12_4019e19c85dc8ff31bafe3ad3b418ade_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-02-12_4019e19c85dc8ff31bafe3ad3b418ade_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-12_4019e19c85dc8ff31bafe3ad3b418ade_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:548
- 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:4600

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
40KB

MD5
a577e8569a4c2ab524bb6700f899cfc8

SHA1
72bce9933a8a07eb4a163328a276856ebde892b4

SHA256
b035616e3fff343ac25fe9568b8b41dbe1b901742c665646f9302c6046604d01

SHA512
18f1c21acd3bed862f015640b5ae6de40621533ec0638c3af0a61731a61d54b5e2eff9dd450c8dde537fbf219c287ffa08c5a6a19648e4d861dbc23158a57d83

Download Submit
memory/548-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/548-1-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/548-2-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/548-3-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/548-19-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/4600-18-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/4600-20-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4600-54-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download