0bb23b58ef390c9f42e5dfa5f784c9b612603e8f36cbff83500be8d0f7e226ec

Analysis

max time kernel
121s
max time network
138s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
22/01/2024, 18:41

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General

Target

2024-01-22_f002debba961435faa14a6ce267d76a4_cryptolocker.exe
Size

83KB
MD5

f002debba961435faa14a6ce267d76a4
SHA1

77bbceae1cd39edc63bb80cbf6f0df5288fc0af5
SHA256

0bb23b58ef390c9f42e5dfa5f784c9b612603e8f36cbff83500be8d0f7e226ec
SHA512

51b6704b0ff809453e728a89f9494421d3a62b7054618cb9339e872fb10230aad33018a4c4e1e13580e42dfe4bcb4e2a85ed2ac6fa1b19b9a8e120f51104ccf7
SSDEEP

768:XS5nQJ24LR1bytOOtEvwDpjNbZ7uyA36S7MpxRXrZSUfFKazNclMjNUv70:i5nkFGMOtEvwDpjNbwQEI8UtzNcO8I

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/1588-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000d00000002311e-13.dat	CryptoLocker_rule2
behavioral2/memory/1588-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4372-18-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4372-54-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral2/memory/1588-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4372-18-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4372-54-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 5 IoCs

resource	yara_rule
behavioral2/memory/1588-0-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x000d00000002311e-13.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/1588-17-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/4372-18-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/4372-54-0x0000000000500000-0x000000000050F000-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-1-5-21-1497073144-2389943819-3385106915-1000\Control Panel\International\Geo\Nation	2024-01-22_f002debba961435faa14a6ce267d76a4_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\Control Panel\International\Geo\Nation	misid.exe

Executes dropped EXE 1 IoCs

pid	Process
4372	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 1588 wrote to memory of 4372	1588	2024-01-22_f002debba961435faa14a6ce267d76a4_cryptolocker.exe	88
PID 1588 wrote to memory of 4372	1588	2024-01-22_f002debba961435faa14a6ce267d76a4_cryptolocker.exe	88
PID 1588 wrote to memory of 4372	1588	2024-01-22_f002debba961435faa14a6ce267d76a4_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-01-22_f002debba961435faa14a6ce267d76a4_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-22_f002debba961435faa14a6ce267d76a4_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1588
- 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:4372

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
83KB

MD5
7a660875de0be5b8f3182e74d8258800

SHA1
fe1451b793c744cc95427105ab628c6ec7aae675

SHA256
d8133e41390510b7e022a7345df74edcb07a540a5876e4778f6e600be1d714a3

SHA512
41aab5fce07953f865b78343b2fffec974e6d5381f4f6cd25a873311c8d907db77152dcc0900a067272bded2374e58caac6cec8c01aa3f25f734b87c42e5d3a1

Download Submit
memory/1588-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1588-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/1588-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/1588-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/1588-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/4372-18-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/4372-54-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download