023abc74aa4422487d7d5fbd59bdcc3903c1a08e8cff01312afba0ed9af73d11

Analysis

max time kernel
89s
max time network
124s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
01/02/2024, 08:52

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General

Target

2024-02-01_b4fdb4088d0a95960e7040372e5ce957_cryptolocker.exe
Size

45KB
MD5

b4fdb4088d0a95960e7040372e5ce957
SHA1

232586d102484ed8d8358c11d13ed02a97ccfd19
SHA256

023abc74aa4422487d7d5fbd59bdcc3903c1a08e8cff01312afba0ed9af73d11
SHA512

0d1579bb60f80e43d23e4eaea8df95daa6b244a66ce26e85f226f55a7b6f68db8b17ced7b28d7e6485f1d342b142bfa9990d656a68511aaf97d3816f084bc053
SSDEEP

384:icX+ni9VCr5nQI021q4VQBqURYp055TOtOOtEvwDpjqIGR/hHi7/OlI0G/Bdl:XS5nQJ24LR1bytOOtEvwDpjNbP/bl

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/3084-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000700000002322f-13.dat	CryptoLocker_rule2
behavioral2/memory/3084-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1284-54-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 2 IoCs

resource	yara_rule
behavioral2/memory/3084-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/1284-54-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 4 IoCs

resource	yara_rule
behavioral2/memory/3084-0-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x000700000002322f-13.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/3084-17-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/1284-54-0x0000000000500000-0x000000000050F000-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-1-5-21-3803511929-1339359695-2191195476-1000\Control Panel\International\Geo\Nation	2024-02-01_b4fdb4088d0a95960e7040372e5ce957_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3803511929-1339359695-2191195476-1000\Control Panel\International\Geo\Nation	misid.exe

Executes dropped EXE 1 IoCs

pid	Process
1284	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 3084 wrote to memory of 1284	3084	2024-02-01_b4fdb4088d0a95960e7040372e5ce957_cryptolocker.exe	85
PID 3084 wrote to memory of 1284	3084	2024-02-01_b4fdb4088d0a95960e7040372e5ce957_cryptolocker.exe	85
PID 3084 wrote to memory of 1284	3084	2024-02-01_b4fdb4088d0a95960e7040372e5ce957_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-02-01_b4fdb4088d0a95960e7040372e5ce957_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-01_b4fdb4088d0a95960e7040372e5ce957_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3084
- 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:1284

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
45KB

MD5
39a4b9a87b462d09136bf61d7463b4f5

SHA1
77eea50414e98e2d2e83179ca5ce1e9f0efe6328

SHA256
59061877df66ea116f5387ba1ddcba11141d260018dd31b00fbc4494b14eca11

SHA512
893d95f1d03b87ae7cfd22dcf5fbc809a2bc19fb9200259d1281aaa5bc4751c8810328814df39aa3956488d6d9705d6c3d5e32fdb98f0f9c7ebbe9de679dc65d

Download Submit
memory/1284-19-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/1284-20-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/1284-54-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3084-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3084-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/3084-2-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/3084-3-0x00000000006D0000-0x00000000006D6000-memory.dmp

Filesize
24KB

Download
memory/3084-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download