fabcbdbe5a0ac3d07e68b380d0e569bb81ae3cc0886708106112d95c0ab5d1fb

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
28/03/2024, 04:48

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-03-28_9d0bce2c4ad01a8b721d2b38080f8784_cryptolocker.exe
Size

41KB
MD5

9d0bce2c4ad01a8b721d2b38080f8784
SHA1

4f8d050d782e07de705fc23ea24db57dec330507
SHA256

fabcbdbe5a0ac3d07e68b380d0e569bb81ae3cc0886708106112d95c0ab5d1fb
SHA512

0b277562e079da04440e174de5f434058017b3137a5f1efd083a0d751778ad5039fd702896252e2582774bd2058df483cd670a77d9b365cbf5ae1a53df883013
SSDEEP

768:TS5nQJ24LR7tOOtEvwDpjGqPhqlcnvhx5/xFRvM:m5nkFNMOtEvwDpjG8hhXNM

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/4212-0-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0008000000023208-13.dat	CryptoLocker_rule2
behavioral2/memory/3644-17-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4212-18-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3644-27-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral2/memory/3644-17-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4212-18-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1
behavioral2/memory/3644-27-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 5 IoCs

resource	yara_rule
behavioral2/memory/4212-0-0x0000000000500000-0x000000000050E000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x0008000000023208-13.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/3644-17-0x0000000000500000-0x000000000050E000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/4212-18-0x0000000000500000-0x000000000050E000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/3644-27-0x0000000000500000-0x000000000050E000-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-1-5-21-983155329-280873152-1838004294-1000\Control Panel\International\Geo\Nation	2024-03-28_9d0bce2c4ad01a8b721d2b38080f8784_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3644	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 4212 wrote to memory of 3644	4212	2024-03-28_9d0bce2c4ad01a8b721d2b38080f8784_cryptolocker.exe	87
PID 4212 wrote to memory of 3644	4212	2024-03-28_9d0bce2c4ad01a8b721d2b38080f8784_cryptolocker.exe	87
PID 4212 wrote to memory of 3644	4212	2024-03-28_9d0bce2c4ad01a8b721d2b38080f8784_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-03-28_9d0bce2c4ad01a8b721d2b38080f8784_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-28_9d0bce2c4ad01a8b721d2b38080f8784_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4212
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:3644

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

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\misid.exe

Filesize
41KB

MD5
9250737b322d4bdd6250dc67eba840a7

SHA1
b8aca40548ab468000e92ff3426be0361b7d3d16

SHA256
3eb150cdab91ca8a0195159010f16724707ec8bb59e0bf63e89d0ef16e95c1d4

SHA512
a6f48a1ab4016e6d25d7bd12202af5e530cae75d40102dbca2a34f90d05df3fb83e3b0d239bb998d5f70916031eeddd11cd31dd06f27527332d1002e064e7d72

Download Submit
memory/3644-17-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/3644-20-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/3644-24-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/3644-27-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/4212-0-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/4212-1-0x0000000000670000-0x0000000000676000-memory.dmp

Filesize
24KB

Download
memory/4212-2-0x0000000000670000-0x0000000000676000-memory.dmp

Filesize
24KB

Download
memory/4212-3-0x0000000000690000-0x0000000000696000-memory.dmp

Filesize
24KB

Download
memory/4212-18-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download