5e262efb726c9e7ed51cd6a44f1d12265310658031819b28e3f0157dcefc52f1

Analysis

max time kernel
148s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
19-03-2024 19:55

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General

Target

2024-03-19_c6ac0037ad91a5c97a909bfd39dc43a3_cryptolocker.exe
Size

38KB
MD5

c6ac0037ad91a5c97a909bfd39dc43a3
SHA1

d781cf8fca4dfc94c60871afcaeffc9a2e94b374
SHA256

5e262efb726c9e7ed51cd6a44f1d12265310658031819b28e3f0157dcefc52f1
SHA512

511e557e3d8dd84e87bb21316fa98d7fc859b8d97536c76cd8e38df27b3cdf2cf03f593f7428da71d6f02e654effc70355d749530d6b802003c4235dc350870d
SSDEEP

768:TS5nQJ24LR7tOOtEvwDpjGqPhqlcnvhx5/xFRhpk5:m5nkFNMOtEvwDpjG8hhXLpk5

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/2272-0-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0004000000022747-13.dat	CryptoLocker_rule2
behavioral2/memory/2272-18-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4640-17-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4640-59-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 2 IoCs

resource	yara_rule
behavioral2/memory/2272-18-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4640-59-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 5 IoCs

resource	yara_rule
behavioral2/memory/2272-0-0x0000000000500000-0x000000000050E000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x0004000000022747-13.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/2272-18-0x0000000000500000-0x000000000050E000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/4640-17-0x0000000000500000-0x000000000050E000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/4640-59-0x0000000000500000-0x000000000050E000-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-1-5-21-2727153400-192325109-1870347593-1000\Control Panel\International\Geo\Nation	2024-03-19_c6ac0037ad91a5c97a909bfd39dc43a3_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2727153400-192325109-1870347593-1000\Control Panel\International\Geo\Nation	misid.exe

Executes dropped EXE 1 IoCs

pid	Process
4640	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 2272 wrote to memory of 4640	2272	2024-03-19_c6ac0037ad91a5c97a909bfd39dc43a3_cryptolocker.exe	88
PID 2272 wrote to memory of 4640	2272	2024-03-19_c6ac0037ad91a5c97a909bfd39dc43a3_cryptolocker.exe	88
PID 2272 wrote to memory of 4640	2272	2024-03-19_c6ac0037ad91a5c97a909bfd39dc43a3_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-03-19_c6ac0037ad91a5c97a909bfd39dc43a3_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-19_c6ac0037ad91a5c97a909bfd39dc43a3_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2272
- 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:4640

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
38KB

MD5
bd02971bd42cd76c07476d9c82a1dcca

SHA1
ac4d5955a1ce21efb00f973131bff81ac47f45a5

SHA256
69ebbcffcebf242a8fd9eb6c94a225786eaaf6315aecbbfaecc15fc49e61fe77

SHA512
ab9ed2a20b8da60036a063cbe7e838c27b761329346057e75c57e5bf0213a75f7b61b8627c309702bd4ca1df3d7131dfec8a6f7dab4becf2c21a83488333bdc7

Download Submit
memory/2272-0-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/2272-1-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/2272-2-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/2272-3-0x00000000006D0000-0x00000000006D6000-memory.dmp

Filesize
24KB

Download
memory/2272-18-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/4640-17-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/4640-21-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4640-20-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/4640-59-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download