dfac611a742eeab1e6a0aac8010572927c6e35e81e91efdcd33d46ab6b0b0ffa

Analysis

max time kernel
145s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
12-02-2024 17:38

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General

Target

2024-02-12_6d677c8e86b781bca2939fbbbeeaacbb_cryptolocker.exe
Size

54KB
MD5

6d677c8e86b781bca2939fbbbeeaacbb
SHA1

a8e723621ff537a29162426a41244a5e5d7c450f
SHA256

dfac611a742eeab1e6a0aac8010572927c6e35e81e91efdcd33d46ab6b0b0ffa
SHA512

a0fc2fbb9d86a89adc6721f0915178decc800555fa46244927a0c593c904422641f8c98e0c1363ff1d6db8499f7a2b05811a79ba3a4c44c749aa3ab486743979
SSDEEP

768:xQz7yVEhs9+4uR1bytOOtEvwDpjWfbP/MME:xj+VGMOtEvwDpjubXMME

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

Processes:

resource	yara_rule
behavioral2/memory/1356-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
C:\Users\Admin\AppData\Local\Temp\misid.exe	CryptoLocker_rule2
behavioral2/memory/1356-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/5028-54-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

Processes:

resource	yara_rule
behavioral2/memory/1356-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
C:\Users\Admin\AppData\Local\Temp\misid.exe	CryptoLocker_set1
behavioral2/memory/1356-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/5028-54-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 4 IoCs

Processes:

resource	yara_rule
behavioral2/memory/1356-0-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress
C:\Users\Admin\AppData\Local\Temp\misid.exe	INDICATOR_EXE_Packed_MPress
behavioral2/memory/1356-17-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/5028-54-0x0000000000500000-0x0000000000510000-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

Processes:

2024-02-12_6d677c8e86b781bca2939fbbbeeaacbb_cryptolocker.exemisid.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\Control Panel\International\Geo\Nation	2024-02-12_6d677c8e86b781bca2939fbbbeeaacbb_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\Control Panel\International\Geo\Nation	misid.exe

Executes dropped EXE 1 IoCs

Processes:

misid.exe

pid process

5028 misid.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
5028	misid.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-02-12_6d677c8e86b781bca2939fbbbeeaacbb_cryptolocker.exe

description	pid	process	target process
PID 1356 wrote to memory of 5028	1356	2024-02-12_6d677c8e86b781bca2939fbbbeeaacbb_cryptolocker.exe	misid.exe
PID 1356 wrote to memory of 5028	1356	2024-02-12_6d677c8e86b781bca2939fbbbeeaacbb_cryptolocker.exe	misid.exe
PID 1356 wrote to memory of 5028	1356	2024-02-12_6d677c8e86b781bca2939fbbbeeaacbb_cryptolocker.exe	misid.exe

C:\Users\Admin\AppData\Local\Temp\2024-02-12_6d677c8e86b781bca2939fbbbeeaacbb_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-12_6d677c8e86b781bca2939fbbbeeaacbb_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1356

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:5028

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
54KB

MD5
891bf4777b9ca8d354b15983c8f07b29

SHA1
49d8380a5a5f05d4b1475034610081d952206179

SHA256
38fb08dd2927ecbc4a39045c3c651c53202b168c3b88c1a0908bb5552c435f41

SHA512
a6cf1aa11b2e29aceab88fe3ac1fa41f687b201d1d53d5b4ccfbf9a7b2a8f637884f51249edc07136414a3b1d83fcdf967ccb9d25f3d448e3b3004b7e2125084

Download Submit
memory/1356-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1356-1-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/1356-2-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/1356-3-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/1356-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/5028-19-0x00000000005D0000-0x00000000005D6000-memory.dmp

Filesize
24KB

Download
memory/5028-22-0x0000000000560000-0x0000000000566000-memory.dmp

Filesize
24KB

Download
memory/5028-54-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download