8a788cd0abfbbcc8b5228463f02b55f4775b22cc5b5cd78267008e8aaf6eac17

Analysis

max time kernel
145s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
01/02/2024, 09:42

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General

Target

2024-02-01_f6ac831d42403884700f0385d3b14857_cryptolocker.exe
Size

63KB
MD5

f6ac831d42403884700f0385d3b14857
SHA1

251a852121accaeaeca723a7f79a03d320b13dc0
SHA256

8a788cd0abfbbcc8b5228463f02b55f4775b22cc5b5cd78267008e8aaf6eac17
SHA512

933e25a9fb49a6abde0da5ed75b016539e2a11c5a20c87e3ae6c1ade23ccf93c8421c4ae8f18cac7227d194d4bf6fd5de025c99e02d88628adf776a4543e41cd
SSDEEP

768:6Qz7yVEhs9+4OR7tOOtEvwDpjLHqPOYRmNxt5I52kGEpEhhaUlPIQ:6j+1NMOtEvwDpjr8ox8UDEpuha8PIQ

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/2916-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0006000000023209-13.dat	CryptoLocker_rule2
behavioral2/memory/2916-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4036-54-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/2916-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0006000000023209-13.dat	CryptoLocker_set1
behavioral2/memory/2916-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4036-54-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 4 IoCs

resource	yara_rule
behavioral2/memory/2916-0-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x0006000000023209-13.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/2916-17-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/4036-54-0x0000000000500000-0x000000000050F000-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-1-5-21-983843758-932321429-1636175382-1000\Control Panel\International\Geo\Nation	misid.exe
Key value queried	\REGISTRY\USER\S-1-5-21-983843758-932321429-1636175382-1000\Control Panel\International\Geo\Nation	2024-02-01_f6ac831d42403884700f0385d3b14857_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4036	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 2916 wrote to memory of 4036	2916	2024-02-01_f6ac831d42403884700f0385d3b14857_cryptolocker.exe	84
PID 2916 wrote to memory of 4036	2916	2024-02-01_f6ac831d42403884700f0385d3b14857_cryptolocker.exe	84
PID 2916 wrote to memory of 4036	2916	2024-02-01_f6ac831d42403884700f0385d3b14857_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-02-01_f6ac831d42403884700f0385d3b14857_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-01_f6ac831d42403884700f0385d3b14857_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2916
- 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:4036

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
63KB

MD5
7328eca37f9b49536a93877ea5fb95de

SHA1
fe2c60ee86b8f79d1a4006bc0bce348448bc5534

SHA256
6e287e49903bed2d56e7349921204bc0973593472231817eec4758cbaaa674a6

SHA512
d0a5705113d4c16e42e79f4ea3a964b63ddbf87eeb2021e1699d2d25680bfc6197a9150f3f787d5aab2d309de8d63e38507573bcbbebd79d196324055d4ee7f4

Download Submit
memory/2916-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2916-1-0x0000000002060000-0x0000000002066000-memory.dmp

Filesize
24KB

Download
memory/2916-2-0x0000000002060000-0x0000000002066000-memory.dmp

Filesize
24KB

Download
memory/2916-3-0x0000000002080000-0x0000000002086000-memory.dmp

Filesize
24KB

Download
memory/2916-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/4036-19-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/4036-21-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4036-54-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download