68bb6db7c2ae9e251c5109c0eaae03cd7ca3fd1fd30d6a7e03cbf2c15a37639b

Analysis

max time kernel
144s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
17-02-2024 21:30

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General

Target

2024-02-17_3439eab98b9ad1034f5faf4f1a43c6a0_cryptolocker.exe
Size

85KB
MD5

3439eab98b9ad1034f5faf4f1a43c6a0
SHA1

05b11cc46bd0783e84719946e841a26ebf7508ad
SHA256

68bb6db7c2ae9e251c5109c0eaae03cd7ca3fd1fd30d6a7e03cbf2c15a37639b
SHA512

9616e1a648d92452248619264ea6bab0cdb92b38de18ab109f2bf944030a075d5da543c61fcbb1829a88366462343889fe60b35f0df34b5ff887abe26426fcec
SSDEEP

768:XS5nQJ24LR1bytOOtEvwDpjNbZ7uyA36S7MpxRXrZSUfFKazNclMjNUvx5/5:i5nkFGMOtEvwDpjNbwQEI8UtzNcO8Z

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/3828-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000600000002320b-13.dat	CryptoLocker_rule2
behavioral2/memory/1476-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3828-18-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1476-27-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral2/memory/1476-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/3828-18-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/1476-27-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 5 IoCs

resource	yara_rule
behavioral2/memory/3828-0-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x000600000002320b-13.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/1476-17-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/3828-18-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/1476-27-0x0000000000500000-0x000000000050F000-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-1-5-21-635608581-3370340891-292606865-1000\Control Panel\International\Geo\Nation	2024-02-17_3439eab98b9ad1034f5faf4f1a43c6a0_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1476	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 3828 wrote to memory of 1476	3828	2024-02-17_3439eab98b9ad1034f5faf4f1a43c6a0_cryptolocker.exe	83
PID 3828 wrote to memory of 1476	3828	2024-02-17_3439eab98b9ad1034f5faf4f1a43c6a0_cryptolocker.exe	83
PID 3828 wrote to memory of 1476	3828	2024-02-17_3439eab98b9ad1034f5faf4f1a43c6a0_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-02-17_3439eab98b9ad1034f5faf4f1a43c6a0_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-17_3439eab98b9ad1034f5faf4f1a43c6a0_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3828
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:1476

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
85KB

MD5
afb2ee05b2dfc91dcb3d5e78a55433a5

SHA1
95319de405a784485faac23c872d39b0700f98ea

SHA256
418db39ee87eb177eecb2d59adbfdf24093237e26c6d463f4d8e0e528e1144f1

SHA512
853f7266d342207ca53a5bafa821a0ef5bc2c730acf031d7966ae488f081eb0d0a25f08203246b129910319141941ec3ebf62247ab0a9cd5a7b644f003dc37a4

Download Submit
memory/1476-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1476-20-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/1476-22-0x0000000000620000-0x0000000000626000-memory.dmp

Filesize
24KB

Download
memory/1476-27-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3828-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3828-1-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/3828-2-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/3828-3-0x0000000000510000-0x0000000000516000-memory.dmp

Filesize
24KB

Download
memory/3828-18-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download