7169cb2373fc0d1f89d6b26ba3348fef01e5add9b6a9ea711462f8e16f11c558

Analysis

max time kernel
150s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
05/09/2024, 12:26

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General

Target

2024-09-05_1e15a223519f3ee03702333a1dfbfe3a_cryptolocker.exe
Size

44KB
MD5

1e15a223519f3ee03702333a1dfbfe3a
SHA1

9b6575c96c7318cfbceb26ea12a0cce798cac1fa
SHA256

7169cb2373fc0d1f89d6b26ba3348fef01e5add9b6a9ea711462f8e16f11c558
SHA512

f701d2ac2624505641bc2b51a962d7675ec3941d80df8e126477d18c8d70979a44a226ca646b12dcede001c3033532b014707753e7b7cafc81b3f32d540a25f5
SSDEEP

768:b/yC4GyNM01GuQMNXw2PSjHPbSuYlW8PAT4:b/pYayGig5HjS3NPAT4

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-1-5-21-2170637797-568393320-3232933035-1000\Control Panel\International\Geo\Nation	2024-09-05_1e15a223519f3ee03702333a1dfbfe3a_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4796	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	retln.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-09-05_1e15a223519f3ee03702333a1dfbfe3a_cryptolocker.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2684 wrote to memory of 4796	2684	2024-09-05_1e15a223519f3ee03702333a1dfbfe3a_cryptolocker.exe	92
PID 2684 wrote to memory of 4796	2684	2024-09-05_1e15a223519f3ee03702333a1dfbfe3a_cryptolocker.exe	92
PID 2684 wrote to memory of 4796	2684	2024-09-05_1e15a223519f3ee03702333a1dfbfe3a_cryptolocker.exe	92

C:\Users\Admin\AppData\Local\Temp\2024-09-05_1e15a223519f3ee03702333a1dfbfe3a_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-05_1e15a223519f3ee03702333a1dfbfe3a_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2684
- 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:4796

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=4300,i,2904906934812054273,11716976550456127484,262144 --variations-seed-version --mojo-platform-channel-handle=3880 /prefetch:8
1⤵
PID:4528

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

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Downloads

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

Filesize
44KB

MD5
4ec48d047ebf7f9e839dce15c4831c58

SHA1
636f0fb1efb2a65db69a2bd5aaeb7522878b4e07

SHA256
1f3dca4afe5734f44ebb9a466575023352966412bacdc4a9448bdd9169016da9

SHA512
742e91fbfc8093f965b26df19658b7c5a294577af28e8e5024ec8d2dae0eca72f45453788b97bf21753414791f7286b77a98b43a5eea51ca9089c07c7a5673ff

Download Submit
memory/2684-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/2684-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/2684-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4796-25-0x0000000002020000-0x0000000002026000-memory.dmp

Filesize
24KB

Download