c144d332c354ad8bdd1b535689d039ecb78f9e997f8254e93ba7d303876c8838

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
15/04/2024, 06:39

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General

Target

2024-04-15_e246c6417fa44b04a03c78b3c443bcda_cryptolocker.exe
Size

48KB
MD5

e246c6417fa44b04a03c78b3c443bcda
SHA1

bcdb07b73931e189ca3e815e48944487f18c3de2
SHA256

c144d332c354ad8bdd1b535689d039ecb78f9e997f8254e93ba7d303876c8838
SHA512

ac188ca1fd530b66e65de8fed469b0d6bc0f5012413915f130f7c2f60a6bbeb67b55b7fab8a5dbab51f0969cddf17f13ebc4fdebacbc437266f26f3077b6322e
SSDEEP

768:xQz7yVEhs9+4uR1bytOOtEvwDpjWE6BLbjG9RzhwaN4PYG:xj+VGMOtEvwDpjy+TN4t

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/3728-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0005000000022f61-13.dat	CryptoLocker_rule2
behavioral2/memory/3100-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3728-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3100-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral2/memory/3728-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0005000000022f61-13.dat	CryptoLocker_set1
behavioral2/memory/3100-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/3728-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/3100-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 5 IoCs

resource	yara_rule
behavioral2/memory/3728-0-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x0005000000022f61-13.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/3100-18-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/3728-17-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/3100-27-0x0000000000500000-0x0000000000510000-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-1-5-21-259785868-298165991-4178590326-1000\Control Panel\International\Geo\Nation	2024-04-15_e246c6417fa44b04a03c78b3c443bcda_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3100	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 3728 wrote to memory of 3100	3728	2024-04-15_e246c6417fa44b04a03c78b3c443bcda_cryptolocker.exe	85
PID 3728 wrote to memory of 3100	3728	2024-04-15_e246c6417fa44b04a03c78b3c443bcda_cryptolocker.exe	85
PID 3728 wrote to memory of 3100	3728	2024-04-15_e246c6417fa44b04a03c78b3c443bcda_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-04-15_e246c6417fa44b04a03c78b3c443bcda_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-15_e246c6417fa44b04a03c78b3c443bcda_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3728
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:3100

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
48KB

MD5
09f54ea9f2d3003869089fafacd537c4

SHA1
114bc5399391cc2aa16edced60022ac3f1d24d0d

SHA256
e63f994135092887248f31d06ebee596a96aefd3cf12cd5067aefdae3d631c99

SHA512
57fdbe9c39f0f8f1e180354c12a0f2057b5c2255f0976b709e0e2ee7dc5d4f825477438db9636553b58ae870f1d00fe526a9869ad54ea0ec8f2b185a91d03f33

Download Submit
memory/3100-18-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3100-21-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/3100-20-0x00000000004C0000-0x00000000004C6000-memory.dmp

Filesize
24KB

Download
memory/3100-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3728-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3728-1-0x0000000000510000-0x0000000000516000-memory.dmp

Filesize
24KB

Download
memory/3728-2-0x0000000000510000-0x0000000000516000-memory.dmp

Filesize
24KB

Download
memory/3728-3-0x00000000021A0000-0x00000000021A6000-memory.dmp

Filesize
24KB

Download
memory/3728-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download