d3db9ab2d831df3dba5a35de2d13eb6735027ad3277746c2468f30f63bf9706c

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240221-en
resource tags

arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
submitted
25/02/2024, 09:48

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General

Target

2024-02-25_a3e19957ed2f4f9e2b9acd19d6b7cd1e_cryptolocker.exe
Size

41KB
MD5

a3e19957ed2f4f9e2b9acd19d6b7cd1e
SHA1

6a7dd2b1b554aa1540b3f9154f66200c681f41f4
SHA256

d3db9ab2d831df3dba5a35de2d13eb6735027ad3277746c2468f30f63bf9706c
SHA512

a6d0e7ea27ed42a896e2ed65275207824dbfcf4099e8b3f34a2f6b661fe08ba5e652dcf245cbd47c3734ae78471fa5032e208f14dc0cf119f5d07b79235c8727
SSDEEP

768:6Qz7yVEhs9+4OR7tOOtEvwDpjLHqh6n8E:6j+1NMOtEvwDpjrR8E

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/4236-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000a0000000231f5-13.dat	CryptoLocker_rule2
behavioral2/memory/4236-18-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2148-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2148-27-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral2/memory/4236-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000a0000000231f5-13.dat	CryptoLocker_set1
behavioral2/memory/4236-18-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/2148-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/2148-27-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 5 IoCs

resource	yara_rule
behavioral2/memory/4236-0-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x000a0000000231f5-13.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/4236-18-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/2148-17-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/2148-27-0x0000000000500000-0x000000000050F000-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-1-5-21-2132103209-3755304320-2959162027-1000\Control Panel\International\Geo\Nation	2024-02-25_a3e19957ed2f4f9e2b9acd19d6b7cd1e_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2148	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 4236 wrote to memory of 2148	4236	2024-02-25_a3e19957ed2f4f9e2b9acd19d6b7cd1e_cryptolocker.exe	88
PID 4236 wrote to memory of 2148	4236	2024-02-25_a3e19957ed2f4f9e2b9acd19d6b7cd1e_cryptolocker.exe	88
PID 4236 wrote to memory of 2148	4236	2024-02-25_a3e19957ed2f4f9e2b9acd19d6b7cd1e_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-02-25_a3e19957ed2f4f9e2b9acd19d6b7cd1e_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-25_a3e19957ed2f4f9e2b9acd19d6b7cd1e_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4236
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:2148

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
41KB

MD5
dc7903af500883e64b978d66a520c039

SHA1
bf8c523ec018e6a8b08b590cdfeb32215db4c575

SHA256
8efa28259ee5f73a8cce46906c4fadb51535773afd9a20d5b322271d205612ce

SHA512
9779c550d9d2a637265d99d8a189807f15ac6a072e0aef3682cc43a811f26346f0b61c7c57507ac311b6645aaafc704c4dd3581ed91185d1503444c280ecb6aa

Download Submit
memory/2148-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2148-20-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/2148-22-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2148-27-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/4236-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/4236-1-0x0000000002150000-0x0000000002156000-memory.dmp

Filesize
24KB

Download
memory/4236-2-0x0000000002150000-0x0000000002156000-memory.dmp

Filesize
24KB

Download
memory/4236-3-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

Download
memory/4236-18-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download