c6a103fe9eb0d3f34e228ae70418030eaf2a9f40d95ed9c73eaa3d1f2fa5723a

Analysis

max time kernel
143s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
19/01/2024, 12:36

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General

Target

2024-01-19_a5f71ef40589d7cb6a80c45c9e83871b_cryptolocker.exe
Size

33KB
MD5

a5f71ef40589d7cb6a80c45c9e83871b
SHA1

2828e4835bf9b9c7131b3686cd3a5efd29e95bf3
SHA256

c6a103fe9eb0d3f34e228ae70418030eaf2a9f40d95ed9c73eaa3d1f2fa5723a
SHA512

be72592700dbc3b9c8ef2d5cf6b9292f245e4e3415f6cd23f58570f159917d9b430b8913649f2df012aed526cee7f07384f857d627029a160a2f520deb572f6f
SSDEEP

384:bAvMaNGh4z7CG3POOvbRSLoF/F0QU5XYFnufc/zzogFzpjufAq18st8B9:bAvJCYOOvbRPDEgXVFzpCYVb

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 2 IoCs

resource	yara_rule
behavioral2/files/0x000400000001e630-12.dat	CryptoLocker_rule2
behavioral2/files/0x000400000001e630-16.dat	CryptoLocker_rule2

Checks computer location settings 2 TTPs 2 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-1-5-21-1168293393-3419776239-306423207-1000\Control Panel\International\Geo\Nation	2024-01-19_a5f71ef40589d7cb6a80c45c9e83871b_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\Control Panel\International\Geo\Nation	demka.exe

Executes dropped EXE 1 IoCs

pid	Process
2004	demka.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 3824 wrote to memory of 2004	3824	2024-01-19_a5f71ef40589d7cb6a80c45c9e83871b_cryptolocker.exe	25
PID 3824 wrote to memory of 2004	3824	2024-01-19_a5f71ef40589d7cb6a80c45c9e83871b_cryptolocker.exe	25
PID 3824 wrote to memory of 2004	3824	2024-01-19_a5f71ef40589d7cb6a80c45c9e83871b_cryptolocker.exe	25

C:\Users\Admin\AppData\Local\Temp\2024-01-19_a5f71ef40589d7cb6a80c45c9e83871b_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-19_a5f71ef40589d7cb6a80c45c9e83871b_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3824
- C:\Users\Admin\AppData\Local\Temp\demka.exe
  "C:\Users\Admin\AppData\Local\Temp\demka.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  PID:2004

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\demka.exe

Filesize
9KB

MD5
abd7c5675d783771eb7df114c00b0146

SHA1
f831c9b1c4c47531566b3a44354c2ab802289354

SHA256
3ef395dbb4ae08423c3864fb2596004688e0731624c3f4b093f2392f50ba5acb

SHA512
0609fc7c556d23b6fed1b2ed2c9a75e53a8e0f6f8fadbef4b91cb988f2ada451a60bbded674a97228a9ad12fec6572d2dda2f9f21edb0ce4e3e30b01cd3358fd

Download Submit
C:\Users\Admin\AppData\Local\Temp\demka.exe

Filesize
33KB

MD5
dcb845863a77db6d2fbac1cce1b63fef

SHA1
73df1538849b61f354819827c5c1ea0666570517

SHA256
1c5362bf2396f903a4d9be7053ed18e150e98d1860601efaccd320e7567de8be

SHA512
efe27e9b5877c6d4ff43e4af96f8e12ac84fca6c6f7373100a62743a74a085c885c403b00a681bdfd3805be33e5855dd812d5e53206e8144af9a7d94ade30b30

Download Submit
memory/2004-25-0x0000000002D60000-0x0000000002D66000-memory.dmp

Filesize
24KB

Download
memory/3824-0-0x0000000002260000-0x0000000002266000-memory.dmp

Filesize
24KB

Download
memory/3824-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/3824-1-0x0000000002260000-0x0000000002266000-memory.dmp

Filesize
24KB

Download