64a32784a77acd43c6f7b9c3a76d61c23abeefadf1babbda2fa58c38eafbd978

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
06-10-2024 01:26

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General

Target

2024-10-06_eaaaf690c850356aff0787147b34c9e1_cryptolocker.exe
Size

37KB
MD5

eaaaf690c850356aff0787147b34c9e1
SHA1

67e32573d05afb621d368676f7df9b080d032b0a
SHA256

64a32784a77acd43c6f7b9c3a76d61c23abeefadf1babbda2fa58c38eafbd978
SHA512

2f16b71585d7d6864c97cb28fdad2371519850ee88c93a2f21a31dbe2485e18d311bde796e01315441775a5ebb2f31976f487b7b18ed8956bb4024640cbfe9a3
SSDEEP

768:b/yC4GyNM01GuQMNXw2PSjHPbSuYlU7h0:b/pYayGig5HjS3ul0

Score

7^/10

discovery

Malware Config

Signatures

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-1-5-21-2718105630-359604950-2820636825-1000\Control Panel\International\Geo\Nation	2024-10-06_eaaaf690c850356aff0787147b34c9e1_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3176	retln.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-10-06_eaaaf690c850356aff0787147b34c9e1_cryptolocker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	retln.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2736 wrote to memory of 3176	2736	2024-10-06_eaaaf690c850356aff0787147b34c9e1_cryptolocker.exe	82
PID 2736 wrote to memory of 3176	2736	2024-10-06_eaaaf690c850356aff0787147b34c9e1_cryptolocker.exe	82
PID 2736 wrote to memory of 3176	2736	2024-10-06_eaaaf690c850356aff0787147b34c9e1_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-10-06_eaaaf690c850356aff0787147b34c9e1_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-10-06_eaaaf690c850356aff0787147b34c9e1_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2736
- C:\Users\Admin\AppData\Local\Temp\retln.exe
  "C:\Users\Admin\AppData\Local\Temp\retln.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:3176

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

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\retln.exe

Filesize
37KB

MD5
0af72a0182fb0915ee32e6c96aaec02a

SHA1
1751313b918021ef2f273d4fa09f8eedada26a0a

SHA256
6b00dc8e00bf4834138c941be1c89330b93a80af81b44a6bb0098af3e42cb39a

SHA512
d092a62774c42a052c1d3a1f552f912180fe821bc4e9d4d663550ad2a934146bdbf1a5106a6af689e7e1dfc83d8858fe3c2f45ff7867f272e2af2f754a424532

Download Submit
memory/2736-0-0x0000000002E90000-0x0000000002E96000-memory.dmp

Filesize
24KB

Download
memory/2736-1-0x0000000002E90000-0x0000000002E96000-memory.dmp

Filesize
24KB

Download
memory/2736-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/3176-25-0x0000000002200000-0x0000000002206000-memory.dmp

Filesize
24KB

Download