afbdfcf277b0d12d1d20c216cbe9a3d534f426f7f3cdbc2419454f75238f484f

Analysis

max time kernel
120s
max time network
121s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
07-09-2024 01:21

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General

Target

2024-09-07_c89e9f393d8ae8daddedf05fda291451_cryptolocker.exe
Size

59KB
MD5

c89e9f393d8ae8daddedf05fda291451
SHA1

1b4e23734d1a51045611e9dc9bc5928f1e9437a4
SHA256

afbdfcf277b0d12d1d20c216cbe9a3d534f426f7f3cdbc2419454f75238f484f
SHA512

65762ca76d9aed0252b8170e1837442d0bccfb6f5d57f74bfe1fd65dc0858fb89ed57a79141aa4f8954bf4588ba76e9075bf22f0eb3f69caa1b0c6b7d86b6237
SSDEEP

768:bP9g/WItCSsAfFaeOcfXVr3BPOz5CFBmNuFgUjlgcSn:bP9g/xtCS3Dxx0L

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2400	gewos.exe

Loads dropped DLL 1 IoCs

pid	Process
2488	2024-09-07_c89e9f393d8ae8daddedf05fda291451_cryptolocker.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2488-0-0x0000000000400000-0x000000000040E000-memory.dmp	upx
behavioral1/files/0x0012000000015ccc-11.dat	upx
behavioral1/memory/2400-17-0x0000000000400000-0x000000000040E000-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	2024-09-07_c89e9f393d8ae8daddedf05fda291451_cryptolocker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	gewos.exe

Suspicious use of UnmapMainImage 2 IoCs

pid	Process
2488	2024-09-07_c89e9f393d8ae8daddedf05fda291451_cryptolocker.exe
2400	gewos.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2488 wrote to memory of 2400	2488	2024-09-07_c89e9f393d8ae8daddedf05fda291451_cryptolocker.exe	31
PID 2488 wrote to memory of 2400	2488	2024-09-07_c89e9f393d8ae8daddedf05fda291451_cryptolocker.exe	31
PID 2488 wrote to memory of 2400	2488	2024-09-07_c89e9f393d8ae8daddedf05fda291451_cryptolocker.exe	31
PID 2488 wrote to memory of 2400	2488	2024-09-07_c89e9f393d8ae8daddedf05fda291451_cryptolocker.exe	31

C:\Users\Admin\AppData\Local\Temp\2024-09-07_c89e9f393d8ae8daddedf05fda291451_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-07_c89e9f393d8ae8daddedf05fda291451_cryptolocker.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2488
- 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:2400

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

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Downloads

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

Filesize
59KB

MD5
6c193883e05ceb1e37a2465795397a99

SHA1
fca0d0712e7591fdf586c8192c36a54432777b2b

SHA256
d531ae1eeeb3db9f9f1ce5d23fbe9f906aba1b7f3f505c7187aad3999f2372e8

SHA512
983bc8451c971fba4ab0a5f095bd1902be0e9cc03bf36a48b276b26e52baf34b654ee46436555055ef773accb7fdcdad6467c98a68d430e4ba404117862b93d0

Download Submit
memory/2400-17-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/2400-26-0x00000000005B0000-0x00000000005B6000-memory.dmp

Filesize
24KB

Download
memory/2488-0-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/2488-1-0x0000000000380000-0x0000000000386000-memory.dmp

Filesize
24KB

Download
memory/2488-9-0x0000000000380000-0x0000000000386000-memory.dmp

Filesize
24KB

Download
memory/2488-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2488-15-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download