93c095fe9665df3979ee2f9f460ea5aa343e45a11ef8d55754c3bd3dcad11542

Analysis

max time kernel
132s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
03-06-2024 03:50

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General

Target

2024-06-03_a0c947078ef78a2d5fa0e119cb4aec4a_cryptolocker.exe
Size

37KB
MD5

a0c947078ef78a2d5fa0e119cb4aec4a
SHA1

260d3cfa01a5e9ace490451295e2e61d49215a92
SHA256

93c095fe9665df3979ee2f9f460ea5aa343e45a11ef8d55754c3bd3dcad11542
SHA512

bf1c425c6dd761b832fe11bbd9daec07cab7506fa34d9d7e8c29f40acfaf3e85306d2c2a726dcdfbc39b7cd748cdebd8f7bfdd62ae13c641f0c21faa640caf35
SSDEEP

768:bAvJCYOOvbRPDEgXrNekd7l94i3pQheDOk:bAvJCF+RQgJeab4sb9

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000a0000000233ea-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-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation	2024-06-03_a0c947078ef78a2d5fa0e119cb4aec4a_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation	demka.exe

Executes dropped EXE 1 IoCs

pid	Process
4688	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 4656 wrote to memory of 4688	4656	2024-06-03_a0c947078ef78a2d5fa0e119cb4aec4a_cryptolocker.exe	83
PID 4656 wrote to memory of 4688	4656	2024-06-03_a0c947078ef78a2d5fa0e119cb4aec4a_cryptolocker.exe	83
PID 4656 wrote to memory of 4688	4656	2024-06-03_a0c947078ef78a2d5fa0e119cb4aec4a_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-06-03_a0c947078ef78a2d5fa0e119cb4aec4a_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-03_a0c947078ef78a2d5fa0e119cb4aec4a_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4656
- 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:4688

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
37KB

MD5
ca3919e9e24a93bb6d6fbc52ab2245c1

SHA1
1e65771c0be3f1b510108e4260a25499241a6242

SHA256
52105a45b92afa44b82b7fbe0e0f137e4674b69ab5a12c3416c8e98be0a6cfd3

SHA512
2f25f58d8d0597cb0012bb84ea8e45d44e9787afa8d5d5ed4b71c5a3735e07090764a172dea92bc60ca3a8704d8ca9b0a45fb1fde49668a4bee3ccf48712a7fd

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

Filesize
186B

MD5
2b71e989eb0a1bbdb8bd269e689939b2

SHA1
64eafab9a6da63314369df6b499d318d939f53e1

SHA256
dc15b236e84b9e2d978358b2e8499585f50166f9bda77b68aed5b8fa2c6c61a7

SHA512
77366cf754c191fe46bf237d9a47e3210b1971ad4b3f392301c3c2657c9420a47c8eb4336054768f9fbe82510c01209c60f6d30c342e3c34f64de1f83adc851a

Download Submit
memory/4656-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/4656-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4656-8-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download