d9cef41bf072cbf2bac93977bb252d0e5237f32485281fb40852a7ddb2d9f987

Analysis

max time kernel
31s
max time network
32s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
19-09-2024 06:25

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General

Target

2024-09-19_5cd287c0a464d3729e32ddd8a7640062_cryptolocker.exe
Size

58KB
MD5

5cd287c0a464d3729e32ddd8a7640062
SHA1

e7328cbef953695b5b139cc5ec7e4c08b7767bb7
SHA256

d9cef41bf072cbf2bac93977bb252d0e5237f32485281fb40852a7ddb2d9f987
SHA512

2d327bc3e2acb7873141f6f04116a4d403d641a2226e24c6cda79799e2a988598cf4889dde82567ca1384cd5e1114edf0dbfe90d0892042360fe796418c85232
SSDEEP

768:bP9g/WItCSsAfFaeOcfXVr3BPOz5CFBmNuFgUjlYr6:bP9g/xtCS3Dxx0LW

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2168	gewos.exe

Loads dropped DLL 1 IoCs

pid	Process
2604	2024-09-19_5cd287c0a464d3729e32ddd8a7640062_cryptolocker.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2604-0-0x0000000000400000-0x000000000040E000-memory.dmp	upx
behavioral1/files/0x00080000000120fe-11.dat	upx
behavioral1/memory/2168-17-0x0000000000400000-0x000000000040E000-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	2024-09-19_5cd287c0a464d3729e32ddd8a7640062_cryptolocker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	gewos.exe

Suspicious use of UnmapMainImage 2 IoCs

pid	Process
2604	2024-09-19_5cd287c0a464d3729e32ddd8a7640062_cryptolocker.exe
2168	gewos.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2604 wrote to memory of 2168	2604	2024-09-19_5cd287c0a464d3729e32ddd8a7640062_cryptolocker.exe	30
PID 2604 wrote to memory of 2168	2604	2024-09-19_5cd287c0a464d3729e32ddd8a7640062_cryptolocker.exe	30
PID 2604 wrote to memory of 2168	2604	2024-09-19_5cd287c0a464d3729e32ddd8a7640062_cryptolocker.exe	30
PID 2604 wrote to memory of 2168	2604	2024-09-19_5cd287c0a464d3729e32ddd8a7640062_cryptolocker.exe	30

C:\Users\Admin\AppData\Local\Temp\2024-09-19_5cd287c0a464d3729e32ddd8a7640062_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-19_5cd287c0a464d3729e32ddd8a7640062_cryptolocker.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2604
- 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:2168

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
58KB

MD5
f9f2ec13f7a9ee8ba1b2b48b9c847a29

SHA1
d27076b6347cfa65d2b0acdb8fbcff6e75fa0ae0

SHA256
5693a9e3e5399576ac2f78ff317d36ece17cb28930323df79ba450caead65c37

SHA512
80b04cda56a2fed45be8d0a1dc005abc469d0550a9652b36647689f55ad738fba83d143d2510908b8d9f55422089c7949ea29411d9e018f55a9241c3401d3a8a

Download Submit
memory/2168-17-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/2168-26-0x00000000002F0000-0x00000000002F6000-memory.dmp

Filesize
24KB

Download
memory/2604-0-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/2604-1-0x0000000000270000-0x0000000000276000-memory.dmp

Filesize
24KB

Download
memory/2604-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2604-9-0x0000000000270000-0x0000000000276000-memory.dmp

Filesize
24KB

Download
memory/2604-13-0x0000000000560000-0x000000000056E000-memory.dmp

Filesize
56KB

Download