4093f57cd9214528dbc075247b6b6185af61a8090ea7f030d66a8612cc99dd48

Analysis

max time kernel
150s
max time network
162s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
15-03-2024 03:25

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General

Target

2024-03-15_38feee304798d094b47e73cc45556552_cryptolocker.exe
Size

63KB
MD5

38feee304798d094b47e73cc45556552
SHA1

653b87fa1e1c8107c945a08fc82ff8d564da30ab
SHA256

4093f57cd9214528dbc075247b6b6185af61a8090ea7f030d66a8612cc99dd48
SHA512

a8bb3545f73acadd0c72355eeca903e07ce812c1b4fb9cb0e0b000ad6767be0e98c1665d58bb8244b92170aa2b1ae55614ab3963a1055612b2c04afcd7972358
SSDEEP

768:6Qz7yVEhs9+4OR7tOOtEvwDpjLHqPOYRmNxt5I52kGEKIRM:6j+1NMOtEvwDpjr8ox8UDEKKM

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/4428-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0007000000023201-13.dat	CryptoLocker_rule2
behavioral2/memory/840-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4428-19-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/840-27-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral2/memory/4428-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0007000000023201-13.dat	CryptoLocker_set1
behavioral2/memory/840-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4428-19-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/840-27-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 5 IoCs

resource	yara_rule
behavioral2/memory/4428-0-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x0007000000023201-13.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/840-17-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/4428-19-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/840-27-0x0000000000500000-0x000000000050F000-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-1-5-21-2727153400-192325109-1870347593-1000\Control Panel\International\Geo\Nation	2024-03-15_38feee304798d094b47e73cc45556552_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
840	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 4428 wrote to memory of 840	4428	2024-03-15_38feee304798d094b47e73cc45556552_cryptolocker.exe	90
PID 4428 wrote to memory of 840	4428	2024-03-15_38feee304798d094b47e73cc45556552_cryptolocker.exe	90
PID 4428 wrote to memory of 840	4428	2024-03-15_38feee304798d094b47e73cc45556552_cryptolocker.exe	90

C:\Users\Admin\AppData\Local\Temp\2024-03-15_38feee304798d094b47e73cc45556552_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-15_38feee304798d094b47e73cc45556552_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4428
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:840

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
8723c12ae2ad875428ab353ee495e04c

SHA1
1cc76da0ee9a0e9711a133853092bfb363a2c707

SHA256
b14b8a1334a5e316bc66289f0c1e9b8cb86a449c5a11cde589f1ea9771cafe44

SHA512
3b92193edfac5e2cb6440d9fa71cfff1e6e268636068982fccac705f3af66d92059d84037b23d6bb723e137137db370dee1222708c47b8af0113f72cf792a283

Download Submit
memory/840-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/840-20-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/840-22-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/840-27-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/4428-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/4428-1-0x0000000000530000-0x0000000000536000-memory.dmp

Filesize
24KB

Download
memory/4428-2-0x0000000000530000-0x0000000000536000-memory.dmp

Filesize
24KB

Download
memory/4428-3-0x0000000002230000-0x0000000002236000-memory.dmp

Filesize
24KB

Download
memory/4428-19-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download