caad8a341f7bc4f28b033b5985445bae7f852a276f76bbbaa2d7b40dcf44e87d

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240221-en
resource tags

arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
submitted
22/02/2024, 08:27

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General

Target

2024-02-22_0c067950fa1e548a69e568ff7a53f532_cryptolocker.exe
Size

40KB
MD5

0c067950fa1e548a69e568ff7a53f532
SHA1

1092733cb9b35e18cc5a5a3630505a4ba0bf7a62
SHA256

caad8a341f7bc4f28b033b5985445bae7f852a276f76bbbaa2d7b40dcf44e87d
SHA512

52bf3f999ef4c12423baf7eeb5509d96e848a6877797eabb2c8038ab5a19f77a11fc7fc3d7bab75b40a24fce3359a3c3ccae3b4692d015fca98a0427afbba7f4
SSDEEP

768:TS5nQJ24LR7tOOtEvwDpjGqPhqlcnvhx5/xFR19T:m5nkFNMOtEvwDpjG8hhX3B

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/4916-0-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000b00000002303c-13.dat	CryptoLocker_rule2
behavioral2/memory/4916-16-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4512-26-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 2 IoCs

resource	yara_rule
behavioral2/memory/4916-16-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4512-26-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 4 IoCs

resource	yara_rule
behavioral2/memory/4916-0-0x0000000000500000-0x000000000050E000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x000b00000002303c-13.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/4916-16-0x0000000000500000-0x000000000050E000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/4512-26-0x0000000000500000-0x000000000050E000-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-1-5-21-1392040655-2056082574-619088944-1000\Control Panel\International\Geo\Nation	2024-02-22_0c067950fa1e548a69e568ff7a53f532_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4512	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 4916 wrote to memory of 4512	4916	2024-02-22_0c067950fa1e548a69e568ff7a53f532_cryptolocker.exe	86
PID 4916 wrote to memory of 4512	4916	2024-02-22_0c067950fa1e548a69e568ff7a53f532_cryptolocker.exe	86
PID 4916 wrote to memory of 4512	4916	2024-02-22_0c067950fa1e548a69e568ff7a53f532_cryptolocker.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-02-22_0c067950fa1e548a69e568ff7a53f532_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-22_0c067950fa1e548a69e568ff7a53f532_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4916
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:4512

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
40KB

MD5
74d8316f798cdd6dcdd2d9e6776c53b9

SHA1
64fa883be8e746778f35fa8239f067ee0c2f4d23

SHA256
9e9ac878c5a7362a2d435ff2b0e0af885dd236edda26ef7b34932bf81652883a

SHA512
16f546c4e19169496617a47e8b6e172678ce252343edf982a720bd0b9a2b3e6a7690564c6d2f766d36667523bd9e5d3a3b12cc1d898d5a85be3690cb493ce3ab

Download Submit
memory/4512-19-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/4512-21-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4512-26-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/4916-0-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/4916-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/4916-2-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/4916-3-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/4916-16-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download