4494446e639b8310cf5487c7bc0b386fea66630aa83203bb07f0b925144c02cb

Analysis

max time kernel
118s
max time network
119s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
09/09/2024, 00:26

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-09-09_a62919fe645b2bb66df0cdd80f77eb2e_cryptolocker.exe
Size

59KB
MD5

a62919fe645b2bb66df0cdd80f77eb2e
SHA1

0b1c8114601c02ec0087c2a9a85989c80bed3ae5
SHA256

4494446e639b8310cf5487c7bc0b386fea66630aa83203bb07f0b925144c02cb
SHA512

2126b6b8088e989142e484a3af9384b56f21ad450fe6bec74d2059230f04daffc64f45b6a3d9ec94979fc7a8ce37cc80375b4e4f9b1d030f208b541c5dde850d
SSDEEP

768:bP9g/WItCSsAfFaeOcfXVr3BPOz5CFBmNuFgUjlgcS2:bP9g/xtCS3Dxx0y

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2764	gewos.exe

Loads dropped DLL 1 IoCs

pid	Process
2328	2024-09-09_a62919fe645b2bb66df0cdd80f77eb2e_cryptolocker.exe

UPX packed file 3 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/memory/2328-0-0x0000000000400000-0x000000000040E000-memory.dmp	upx
behavioral1/files/0x00080000000120fd-11.dat	upx
behavioral1/memory/2764-16-0x0000000000400000-0x000000000040E000-memory.dmp	upx

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	gewos.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-09-09_a62919fe645b2bb66df0cdd80f77eb2e_cryptolocker.exe

Suspicious use of UnmapMainImage 2 IoCs

pid	Process
2328	2024-09-09_a62919fe645b2bb66df0cdd80f77eb2e_cryptolocker.exe
2764	gewos.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2328 wrote to memory of 2764	2328	2024-09-09_a62919fe645b2bb66df0cdd80f77eb2e_cryptolocker.exe	30
PID 2328 wrote to memory of 2764	2328	2024-09-09_a62919fe645b2bb66df0cdd80f77eb2e_cryptolocker.exe	30
PID 2328 wrote to memory of 2764	2328	2024-09-09_a62919fe645b2bb66df0cdd80f77eb2e_cryptolocker.exe	30
PID 2328 wrote to memory of 2764	2328	2024-09-09_a62919fe645b2bb66df0cdd80f77eb2e_cryptolocker.exe	30

C:\Users\Admin\AppData\Local\Temp\2024-09-09_a62919fe645b2bb66df0cdd80f77eb2e_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-09_a62919fe645b2bb66df0cdd80f77eb2e_cryptolocker.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2328
- C:\Users\Admin\AppData\Local\Temp\gewos.exe
  "C:\Users\Admin\AppData\Local\Temp\gewos.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of UnmapMainImage
  PID:2764

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

\Users\Admin\AppData\Local\Temp\gewos.exe

Filesize
59KB

MD5
259736449d36ae7fe113d7c3534e0075

SHA1
9ec67bdfcc702563fe11cfd486139c0f80c305da

SHA256
98785cc8b70ff9be541954ce50a5c7987ba37799940ef7be553b5c5336274450

SHA512
724b203f7e4fb00b49ae8a668b2f2a2f7983719d9ce5336584a266948d33a3c0033682070f9909a987a1d101882f9d9c8517f679ac95fb6028f668a2ace2c147

Download Submit
memory/2328-0-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/2328-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2328-1-0x00000000003F0000-0x00000000003F6000-memory.dmp

Filesize
24KB

Download
memory/2328-10-0x00000000003F0000-0x00000000003F6000-memory.dmp

Filesize
24KB

Download
memory/2764-16-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/2764-25-0x0000000000330000-0x0000000000336000-memory.dmp

Filesize
24KB

Download