d13206cb9a6afa85ef00d07f2bda90f2f35f9e2d4ee6654d161b29f16cbd0210

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
24-04-2024 04:22

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General

Target

2024-04-24_d8e7cb8c4b7a0130a5ac0fcb8d692b1e_cryptolocker.exe
Size

41KB
MD5

d8e7cb8c4b7a0130a5ac0fcb8d692b1e
SHA1

840f3a5342ccea776c4d038e20b321d2ce4885a8
SHA256

d13206cb9a6afa85ef00d07f2bda90f2f35f9e2d4ee6654d161b29f16cbd0210
SHA512

9faa2c1c0efe42f5bf5156ce0c3d9b3dd1102f5e1658f398dcfc2cd60ab46859e49ef66dd4e6b1a7559d6701fb25594cb340819541739f5e587be6f429f279c3
SSDEEP

768:bAvJCYOOvbRPDEgXrNekd7l94i3py/yY/Jj:bAvJCF+RQgJeab4sy/lt

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000300000001e970-12.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-1-5-21-2177723727-746291240-1644359950-1000\Control Panel\International\Geo\Nation	demka.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2177723727-746291240-1644359950-1000\Control Panel\International\Geo\Nation	2024-04-24_d8e7cb8c4b7a0130a5ac0fcb8d692b1e_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4400	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 1952 wrote to memory of 4400	1952	2024-04-24_d8e7cb8c4b7a0130a5ac0fcb8d692b1e_cryptolocker.exe	84
PID 1952 wrote to memory of 4400	1952	2024-04-24_d8e7cb8c4b7a0130a5ac0fcb8d692b1e_cryptolocker.exe	84
PID 1952 wrote to memory of 4400	1952	2024-04-24_d8e7cb8c4b7a0130a5ac0fcb8d692b1e_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-04-24_d8e7cb8c4b7a0130a5ac0fcb8d692b1e_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-24_d8e7cb8c4b7a0130a5ac0fcb8d692b1e_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1952
- 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:4400

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
42KB

MD5
09fed60e458bc459a8f3ef50602ff619

SHA1
a28f97038396b4d5e41425e4434cae81abfe77c8

SHA256
4d89d5c45cd02b280cddab97b61bb0d054cb308bfb860dcb07b1736d235eb82e

SHA512
dc7ad7c2d527464c455d1ec2e391a80063ccfdbe6cd194339a33d359d296c4f951989700b3cb39c82c4db1eb480f50b835a8a6cbe033e495866a15e8599f99ae

Download Submit
memory/1952-0-0x00000000022C0000-0x00000000022C6000-memory.dmp

Filesize
24KB

Download
memory/1952-1-0x00000000022C0000-0x00000000022C6000-memory.dmp

Filesize
24KB

Download
memory/1952-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4400-20-0x0000000002D60000-0x0000000002D66000-memory.dmp

Filesize
24KB

Download