1ad48e56bd91bfbc34900d94011bca80c4c21cfde1b653b4bf575a4b0a32b975

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
26/01/2024, 05:23

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General

Target

2024-01-26_17bdcbf2df217f2eb377d3f0ca3ec028_cryptolocker.exe
Size

39KB
MD5

17bdcbf2df217f2eb377d3f0ca3ec028
SHA1

83c9640b1e5ad868f9c5b27b784dd75316efda76
SHA256

1ad48e56bd91bfbc34900d94011bca80c4c21cfde1b653b4bf575a4b0a32b975
SHA512

3e5e2338990f26f70179dffaf2cd1c9d4670eb6d186ce21e335202bf2ac337e32c322bc237e7d37ddeb710ed833f1294d0cd3c39b06d6982a1db80dea4b42124
SSDEEP

768:bIDOw9UiaCHfjnE0Sf88AvvP1oghYvm9/6Dy8POK4:bIDOw9a0Dwo3P1ojvUSDhW

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000002321f-12.dat	CryptoLocker_rule2

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-1-5-21-3336304223-2978740688-3645194410-1000\Control Panel\International\Geo\Nation	2024-01-26_17bdcbf2df217f2eb377d3f0ca3ec028_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4760	lossy.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 4636 wrote to memory of 4760	4636	2024-01-26_17bdcbf2df217f2eb377d3f0ca3ec028_cryptolocker.exe	87
PID 4636 wrote to memory of 4760	4636	2024-01-26_17bdcbf2df217f2eb377d3f0ca3ec028_cryptolocker.exe	87
PID 4636 wrote to memory of 4760	4636	2024-01-26_17bdcbf2df217f2eb377d3f0ca3ec028_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-01-26_17bdcbf2df217f2eb377d3f0ca3ec028_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-26_17bdcbf2df217f2eb377d3f0ca3ec028_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4636
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  PID:4760

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\lossy.exe

Filesize
39KB

MD5
94ea25df20ce407cd0219fd96f480440

SHA1
49877e8640f277fa4c718b7e3eacef7cfc4dc292

SHA256
8a23984d5e7e083a465547536332fb408c8e10c7de238d1ccb4d719e7ca3bf96

SHA512
f9bbf0f07b24f1bd765b2c4f9c4e048930fdf8bb5739200b64be173efa52f62d28d9130523a9e877e8fff16881ff641566a81879815d20e5960658501535092d

Download Submit
memory/4636-0-0x0000000002180000-0x0000000002186000-memory.dmp

Filesize
24KB

Download
memory/4636-1-0x0000000002180000-0x0000000002186000-memory.dmp

Filesize
24KB

Download
memory/4636-2-0x0000000002230000-0x0000000002236000-memory.dmp

Filesize
24KB

Download
memory/4760-17-0x0000000002060000-0x0000000002066000-memory.dmp

Filesize
24KB

Download
memory/4760-21-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download