bf9359ee54f6eb83e754a7731e06fe190dda7e6da95dfb0922782ff20b09743b

Analysis

max time kernel
149s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
28/01/2024, 08:33

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General

Target

2024-01-28_7171750d85dd7d02064a4ab9bddfbaab_cryptolocker.exe
Size

67KB
MD5

7171750d85dd7d02064a4ab9bddfbaab
SHA1

e20271852e498d49722d595212250b6afaada855
SHA256

bf9359ee54f6eb83e754a7731e06fe190dda7e6da95dfb0922782ff20b09743b
SHA512

e82e294c2d1d5def9d9f3998d973036c65eecaaa21f769b21001c22f3f6270aa783a6e23884327e7e1a01c4bf75ee4d818cf5228e01fa1cb605af1ed7ad769d1
SSDEEP

1536:Dk/xY0sllyGQMOtEvwDpjwycDtKkQZQRKb61vSbgZ3QzNKUL:DW60sllyWOtEvwDpjwF851

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 3 IoCs

resource	yara_rule
behavioral2/memory/3968-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0007000000023210-13.dat	CryptoLocker_rule2
behavioral2/memory/3968-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral2/memory/3968-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0007000000023210-13.dat	CryptoLocker_set1
behavioral2/memory/3968-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1

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-1-5-21-983843758-932321429-1636175382-1000\Control Panel\International\Geo\Nation	2024-01-28_7171750d85dd7d02064a4ab9bddfbaab_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3108	asih.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 3968 wrote to memory of 3108	3968	2024-01-28_7171750d85dd7d02064a4ab9bddfbaab_cryptolocker.exe	86
PID 3968 wrote to memory of 3108	3968	2024-01-28_7171750d85dd7d02064a4ab9bddfbaab_cryptolocker.exe	86
PID 3968 wrote to memory of 3108	3968	2024-01-28_7171750d85dd7d02064a4ab9bddfbaab_cryptolocker.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-01-28_7171750d85dd7d02064a4ab9bddfbaab_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-28_7171750d85dd7d02064a4ab9bddfbaab_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3968
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3108

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\asih.exe

Filesize
67KB

MD5
1a34cee58232ca65dfb31418e3dd35d4

SHA1
188dcc97f14d4545e2a2c20d2d2dcf3c7cd3a670

SHA256
a508f0650273ac08d3af433a867457632fd323eb9000e06843c4a53e109ad54f

SHA512
142c39e4c01fe6956646db1422df94b22850a92a2389848aebf468becec86aa4b0a0d35afa0c0553e223eb6bb3544216187d8fa5b3b841fdbdc2a61a4fb7080a

Download Submit
memory/3108-19-0x0000000002080000-0x0000000002086000-memory.dmp

Filesize
24KB

Download
memory/3108-23-0x00000000007B0000-0x00000000007B6000-memory.dmp

Filesize
24KB

Download
memory/3968-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/3968-1-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/3968-2-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/3968-3-0x0000000002040000-0x0000000002046000-memory.dmp

Filesize
24KB

Download
memory/3968-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download