0eb5eba5a0b1035855bcbfbda1a5fac957455baf2428961561a99c55e21c8385

Analysis

max time kernel
138s
max time network
143s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
18/08/2024, 15:28

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General

Target

2024-08-18_c6bff227bacc93cb742bc02efd92af32_cryptolocker.exe
Size

57KB
MD5

c6bff227bacc93cb742bc02efd92af32
SHA1

95fe8f1467e5a24289a4cffa7a00b727fb8cce15
SHA256

0eb5eba5a0b1035855bcbfbda1a5fac957455baf2428961561a99c55e21c8385
SHA512

799ddd43f45dc465342fbe4b8161ec091609445b24a6b0e8f8d42801259815af2bb01003a43d38f0b28f12c5c6f2f45cc96d370a976eb4a31dbf864a526923ec
SSDEEP

768:bP9g/WItCSsAfFaeOcfXVr3BPOz5CFBmNuFgUjl+V:bP9g/xtCS3Dxx0JV

Score

7^/10

discovery upx

Malware Config

Signatures

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-1-5-21-656926755-4116854191-210765258-1000\Control Panel\International\Geo\Nation	2024-08-18_c6bff227bacc93cb742bc02efd92af32_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-656926755-4116854191-210765258-1000\Control Panel\International\Geo\Nation	gewos.exe

Executes dropped EXE 1 IoCs

pid	Process
1460	gewos.exe

UPX packed file 2 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1688-0-0x0000000000400000-0x000000000040E000-memory.dmp	upx
behavioral2/files/0x000900000002341d-13.dat	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	2024-08-18_c6bff227bacc93cb742bc02efd92af32_cryptolocker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	gewos.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1688 wrote to memory of 1460	1688	2024-08-18_c6bff227bacc93cb742bc02efd92af32_cryptolocker.exe	84
PID 1688 wrote to memory of 1460	1688	2024-08-18_c6bff227bacc93cb742bc02efd92af32_cryptolocker.exe	84
PID 1688 wrote to memory of 1460	1688	2024-08-18_c6bff227bacc93cb742bc02efd92af32_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-08-18_c6bff227bacc93cb742bc02efd92af32_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-08-18_c6bff227bacc93cb742bc02efd92af32_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1688
- C:\Users\Admin\AppData\Local\Temp\gewos.exe
  "C:\Users\Admin\AppData\Local\Temp\gewos.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:1460

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\gewos.exe

Filesize
57KB

MD5
40309c2a46d9292204f3efd4488ab263

SHA1
194baea26b8c1605904379aa24b55c46173bdd98

SHA256
27d3e9001301b83fb9802b514e936dc73dff2df58a13cb9682cef17d6c3d06d1

SHA512
10588c2b41bc57c88c76bbfbaa199790f2b4409643648d437df87c2d4419ea50920a64a04f77f877fe80399647dedf445f3833a953fc902c9d053db262c9961f

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

Filesize
184B

MD5
5f89b869dce28ae8a35357ee3b4aa6ee

SHA1
49876ae0902b4cdc391a714a1bb1a2f3aad28506

SHA256
f65ee459f2cf31208a7fc0b8182fee65ed4e9cc050f36514115b3920f27d0a1e

SHA512
9b734c01dec38f4e03b9fa5c9860eb6acc6a61379a5964741f6e5e747edcc46652dbef6d4c9d4e1b7b1df482bb39e0e9ab6a54c6e477923a90e90e7acd55902c

Download Submit
memory/1460-20-0x0000000002190000-0x0000000002196000-memory.dmp

Filesize
24KB

Download
memory/1688-0-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/1688-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/1688-2-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/1688-3-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download