08b6c94f91eeebb1738b364dbf7f3b15f8821350321c58a17276313e5ae9c9e0

Analysis

max time kernel
138s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
17/02/2024, 18:25

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General

Target

2024-02-17_26b29dfa4a8ae43a1f59163386ad040d_cryptolocker.exe
Size

50KB
MD5

26b29dfa4a8ae43a1f59163386ad040d
SHA1

206e78454f0afcccf95991ff71918962130fd088
SHA256

08b6c94f91eeebb1738b364dbf7f3b15f8821350321c58a17276313e5ae9c9e0
SHA512

21f0787d81a8dcc4e7c5b8bebe7118474f7e53e213dcd252f03fc0fe2ba46f8f4fb45cb9c6041105f9ca8af1ea5d141c8c5dda302ffd4f81d861cbfbfeba9b6a
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/BtOOtEvwDpjBVaD3E09vxmlcafFCk:X6QFElP6n+gJBMOtEvwDpjBtExmlnFCk

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023124-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023124-12.dat	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-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation	2024-02-17_26b29dfa4a8ae43a1f59163386ad040d_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4964	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 4840 wrote to memory of 4964	4840	2024-02-17_26b29dfa4a8ae43a1f59163386ad040d_cryptolocker.exe	84
PID 4840 wrote to memory of 4964	4840	2024-02-17_26b29dfa4a8ae43a1f59163386ad040d_cryptolocker.exe	84
PID 4840 wrote to memory of 4964	4840	2024-02-17_26b29dfa4a8ae43a1f59163386ad040d_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-02-17_26b29dfa4a8ae43a1f59163386ad040d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-17_26b29dfa4a8ae43a1f59163386ad040d_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4840
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4964

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
50KB

MD5
331090824658dd6700dfacbb5d7b223e

SHA1
8698bbb4bf47ef0d64ae5e3891c597da7b89c0d6

SHA256
262c63777507f85388b4cf65551904ed4b9fab0c11ab5b8e83cc63f4040a12a1

SHA512
a4419e290de4297954cc2c7a553984a3ab5d53a67355dfa6793102cf90fcc05dd116b7445280a721e1274855d04809aa6eff800716a6d2e55c16b8d9f74d2de8

Download Submit
memory/4840-0-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4840-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4840-2-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/4964-17-0x00000000006E0000-0x00000000006E6000-memory.dmp

Filesize
24KB

Download