f8d616a273ee19f61e2f8fbd29d9ecfebdc7f3d48ef17d01d74eb79f6555dd44

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
21/04/2024, 04:37

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General

Target

2024-04-21_e26bc1dfc241a9e07246c097bd4b0d01_cryptolocker.exe
Size

50KB
MD5

e26bc1dfc241a9e07246c097bd4b0d01
SHA1

aa7c9ca9f0cce164fbcb737c0d02c83571a295bc
SHA256

f8d616a273ee19f61e2f8fbd29d9ecfebdc7f3d48ef17d01d74eb79f6555dd44
SHA512

f7eac205b9507db321d79a2bdac7ff710f19f66131104896e11d9fc870507982ab8d2202f0609ea324176e4fb912eff1e56e5f7483880de34f39d3ddf28e754f
SSDEEP

768:6Qz7yVEhs9+4OR7tOOtEvwDpjLHqPhqlcnvhx5/xFRHnz9:6j+1NMOtEvwDpjr8hhX9Z

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/4276-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x00090000000233f3-13.dat	CryptoLocker_rule2
behavioral2/memory/4276-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3016-26-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/4276-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x00090000000233f3-13.dat	CryptoLocker_set1
behavioral2/memory/4276-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/3016-26-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 4 IoCs

resource	yara_rule
behavioral2/memory/4276-0-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x00090000000233f3-13.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/4276-17-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/3016-26-0x0000000000500000-0x000000000050F000-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-1-5-21-2177723727-746291240-1644359950-1000\Control Panel\International\Geo\Nation	2024-04-21_e26bc1dfc241a9e07246c097bd4b0d01_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3016	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 4276 wrote to memory of 3016	4276	2024-04-21_e26bc1dfc241a9e07246c097bd4b0d01_cryptolocker.exe	86
PID 4276 wrote to memory of 3016	4276	2024-04-21_e26bc1dfc241a9e07246c097bd4b0d01_cryptolocker.exe	86
PID 4276 wrote to memory of 3016	4276	2024-04-21_e26bc1dfc241a9e07246c097bd4b0d01_cryptolocker.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-04-21_e26bc1dfc241a9e07246c097bd4b0d01_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-21_e26bc1dfc241a9e07246c097bd4b0d01_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4276
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:3016

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
50KB

MD5
ad54dbb17cc61edb6408fcc9495c5b67

SHA1
0dbed7bf5b7e848ae6d796baa830e39fb5928b83

SHA256
e3e83ece5a6193e102302494331831fbed174b903fbc55069015940a6bcfa023

SHA512
c54e9149d0b792b352be1c0e5d441a66831a79aecaebad45ba244b244abef381ad9e36df8d622558ed4216df12149e6e984b216a2b9d52385b14321c588a16f7

Download Submit
memory/3016-19-0x00000000006D0000-0x00000000006D6000-memory.dmp

Filesize
24KB

Download
memory/3016-21-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/3016-26-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/4276-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/4276-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4276-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4276-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/4276-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download