474de1de002f6ff2b3ec73aacb6341122c66a5b1e358ac942baf0878180d98ae

Analysis

max time kernel
148s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
12/03/2024, 15:38

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General

Target

2024-03-12_728f3f12832e0e36ff8480b860fe9ec4_cryptolocker.exe
Size

86KB
MD5

728f3f12832e0e36ff8480b860fe9ec4
SHA1

5af3a490d5e8abfc96a1555900dd93c6bfbcb0f4
SHA256

474de1de002f6ff2b3ec73aacb6341122c66a5b1e358ac942baf0878180d98ae
SHA512

73d686c37f5a24b77a7397cb98508f18a38116e3a84f5d15f94ec210ebab45090b297083a0f7580bf245d2d61dbe69cbaa904eba12d764b5a2912fdb3dc9bf52
SSDEEP

768:XS5nQJ24LR1bytOOtEvwDpjNbZ7uyA36S7MpxRXrZSUfFKazNclMjNUvzkxraO:i5nkFGMOtEvwDpjNbwQEI8UtzNcO8zQ

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/2700-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x001000000002313c-13.dat	CryptoLocker_rule2
behavioral2/memory/2700-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4132-26-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 2 IoCs

resource	yara_rule
behavioral2/memory/2700-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4132-26-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 4 IoCs

resource	yara_rule
behavioral2/memory/2700-0-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x001000000002313c-13.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/2700-17-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/4132-26-0x0000000000500000-0x000000000050F000-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-1-5-21-1497073144-2389943819-3385106915-1000\Control Panel\International\Geo\Nation	2024-03-12_728f3f12832e0e36ff8480b860fe9ec4_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4132	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 2700 wrote to memory of 4132	2700	2024-03-12_728f3f12832e0e36ff8480b860fe9ec4_cryptolocker.exe	84
PID 2700 wrote to memory of 4132	2700	2024-03-12_728f3f12832e0e36ff8480b860fe9ec4_cryptolocker.exe	84
PID 2700 wrote to memory of 4132	2700	2024-03-12_728f3f12832e0e36ff8480b860fe9ec4_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-03-12_728f3f12832e0e36ff8480b860fe9ec4_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-12_728f3f12832e0e36ff8480b860fe9ec4_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2700
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:4132

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
86KB

MD5
474c6d809dfa052569dceedbdb9087e8

SHA1
b92ddd97a4adfa548914c85640e5020febfaf44b

SHA256
a12f250c3028afb35ea6dd75a7126b167ad4357192c76317c43f74c278a94af4

SHA512
86e93141f7df1706eea6eae215f0740da139e8209f7bebfc6f2f77245f8332d85d099abeba8d5752fcf11fc0f029f49ff3d339d7a801e1fc876445e09b42ad84

Download Submit
memory/2700-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2700-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2700-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2700-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/2700-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/4132-20-0x00000000005D0000-0x00000000005D6000-memory.dmp

Filesize
24KB

Download
memory/4132-19-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/4132-26-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download