d17fb97cf96b3631d11760a55d5c8fa43aaaa52d3bfd9dc0fc864029978455ec

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
10/03/2024, 20:26

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General

Target

2024-03-10_6d60af0833f1f57d75a3be4ef6c688d5_cryptolocker.exe
Size

40KB
MD5

6d60af0833f1f57d75a3be4ef6c688d5
SHA1

9727a03b1548ede3cd406d4ff79cc9152658fca5
SHA256

d17fb97cf96b3631d11760a55d5c8fa43aaaa52d3bfd9dc0fc864029978455ec
SHA512

5439b84200e2e4c779740e39680888cf1ade55ef64308aeaffd2279ac49b8b00993bf1cb77ec2d1cabf6a1eff44bb4471a577a535a4b87c6c1ea6e87cd15b5e5
SSDEEP

768:TS5nQJ24LR7tOOtEvwDpjGqPhqlcnvhx5/xFRQM:m5nkFNMOtEvwDpjG8hhX6M

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/2312-0-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000f00000002314e-13.dat	CryptoLocker_rule2
behavioral2/memory/2312-17-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2656-26-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 2 IoCs

resource	yara_rule
behavioral2/memory/2312-17-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1
behavioral2/memory/2656-26-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 4 IoCs

resource	yara_rule
behavioral2/memory/2312-0-0x0000000000500000-0x000000000050E000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x000f00000002314e-13.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/2312-17-0x0000000000500000-0x000000000050E000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/2656-26-0x0000000000500000-0x000000000050E000-memory.dmp	INDICATOR_EXE_Packed_MPress

Checks computer location settings 2 TTPs 1 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-1-5-21-1497073144-2389943819-3385106915-1000\Control Panel\International\Geo\Nation	2024-03-10_6d60af0833f1f57d75a3be4ef6c688d5_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2656	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 2312 wrote to memory of 2656	2312	2024-03-10_6d60af0833f1f57d75a3be4ef6c688d5_cryptolocker.exe	85
PID 2312 wrote to memory of 2656	2312	2024-03-10_6d60af0833f1f57d75a3be4ef6c688d5_cryptolocker.exe	85
PID 2312 wrote to memory of 2656	2312	2024-03-10_6d60af0833f1f57d75a3be4ef6c688d5_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-03-10_6d60af0833f1f57d75a3be4ef6c688d5_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-10_6d60af0833f1f57d75a3be4ef6c688d5_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2312
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:2656

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
41KB

MD5
6c27c52f8618019ea44662f3e97de0d6

SHA1
4901dc9706a343c2963e3e88381d7eea8f05d534

SHA256
ba27cb5e7d4d1ded797de4b3e5fdd9ce83f21191911067e55ee5d2bd5baa7715

SHA512
6ee2ba8244aa5bcd9044aaca4054430133f0f335bf52eed04354e6f2772e89cd8fb4156e591079196da42e7ddafc073a9f14806f608d64a4fd23bbc168f34574

Download Submit
memory/2312-0-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/2312-1-0x0000000002300000-0x0000000002306000-memory.dmp

Filesize
24KB

Download
memory/2312-3-0x0000000002190000-0x0000000002196000-memory.dmp

Filesize
24KB

Download
memory/2312-2-0x0000000002300000-0x0000000002306000-memory.dmp

Filesize
24KB

Download
memory/2312-17-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/2656-19-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/2656-25-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download
memory/2656-26-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download