1907ef76d387bda17c6c7c82c4204761f1475ec214222a9b799859d4fb26d3b7

Analysis

max time kernel
93s
max time network
114s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
28/02/2024, 10:31

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General

Target

2024-02-28_2c742964bab78bd9c38a97bb4274f0b6_cryptolocker.exe
Size

63KB
MD5

2c742964bab78bd9c38a97bb4274f0b6
SHA1

552e3303e2851eaec7a5bfd085967e0daa3ed288
SHA256

1907ef76d387bda17c6c7c82c4204761f1475ec214222a9b799859d4fb26d3b7
SHA512

1dcd250f21af3a2aff3fd2d670061719ce4d54805a7eec43d62d157d160a834692d5ee76b110eb19c74b1e6cf0574e90739fb8cab399f698dcd042853187603f
SSDEEP

768:6Qz7yVEhs9+4OR7tOOtEvwDpjLHqPOYRmNxt5I52kGEISuq:6j+1NMOtEvwDpjr8ox8UDE39

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/2376-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000400000001e980-13.dat	CryptoLocker_rule2
behavioral2/memory/2376-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/572-18-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/572-53-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral2/memory/2376-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000400000001e980-13.dat	CryptoLocker_set1
behavioral2/memory/2376-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/572-18-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/572-53-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 5 IoCs

resource	yara_rule
behavioral2/memory/2376-0-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x000400000001e980-13.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/2376-17-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/572-18-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/572-53-0x0000000000500000-0x000000000050F000-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-1-5-21-3270530367-132075249-2153716227-1000\Control Panel\International\Geo\Nation	2024-02-28_2c742964bab78bd9c38a97bb4274f0b6_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3270530367-132075249-2153716227-1000\Control Panel\International\Geo\Nation	misid.exe

Executes dropped EXE 1 IoCs

pid	Process
572	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 2376 wrote to memory of 572	2376	2024-02-28_2c742964bab78bd9c38a97bb4274f0b6_cryptolocker.exe	90
PID 2376 wrote to memory of 572	2376	2024-02-28_2c742964bab78bd9c38a97bb4274f0b6_cryptolocker.exe	90
PID 2376 wrote to memory of 572	2376	2024-02-28_2c742964bab78bd9c38a97bb4274f0b6_cryptolocker.exe	90

C:\Users\Admin\AppData\Local\Temp\2024-02-28_2c742964bab78bd9c38a97bb4274f0b6_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-28_2c742964bab78bd9c38a97bb4274f0b6_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2376
- 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:572

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
63KB

MD5
388b355a11f8cbbee97da80e44db07f9

SHA1
686b59314e8697d20cb58723cbdc884ba360b1a4

SHA256
ee847225b1cbc94789f114ccd7917aba2f080e1338ced1859683a59412d350f1

SHA512
999fc6d2ca6954cbc99053805b696309a5305d375d9266adc31b6e5d88607bca6a56cc55a891a063cdbc4b16f4d79386c10f68151486a0af917e81c2ba911616

Download Submit
memory/572-18-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/572-22-0x0000000000580000-0x0000000000586000-memory.dmp

Filesize
24KB

Download
memory/572-20-0x0000000002080000-0x0000000002086000-memory.dmp

Filesize
24KB

Download
memory/572-53-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2376-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2376-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2376-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2376-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/2376-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download