df8a4aab585fc328f730b74b8c968f43ea3dabbd7438a4f3125d735a9b3d0006

Analysis

max time kernel
147s
max time network
148s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
18/10/2024, 05:29

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General

Target

2024-10-18_83aa687dbd3cb71753c0ff469d249b6c_cryptolocker.exe
Size

58KB
MD5

83aa687dbd3cb71753c0ff469d249b6c
SHA1

a547b4794fa4cf5188102ba6716245e473936c27
SHA256

df8a4aab585fc328f730b74b8c968f43ea3dabbd7438a4f3125d735a9b3d0006
SHA512

63c4a08a916a825601b6c976e3f4bd5fd0f297d1c8c7fe697ad4c9ef0fda59491cee6d4d0a628f39245a72ee60a7a77462e8323c0e2e34516de7e661f9a3f001
SSDEEP

768:bP9g/WItCSsAfFaeOcfXVr3BPOz5CFBmNuFgUjlYY:bP9g/xtCS3Dxx0LY

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1276	gewos.exe

Loads dropped DLL 1 IoCs

pid	Process
2320	2024-10-18_83aa687dbd3cb71753c0ff469d249b6c_cryptolocker.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2320-0-0x0000000000400000-0x000000000040E000-memory.dmp	upx
behavioral1/files/0x000a00000001202b-11.dat	upx
behavioral1/memory/1276-16-0x0000000000400000-0x000000000040E000-memory.dmp	upx
behavioral1/memory/1276-26-0x0000000000400000-0x000000000040E000-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	2024-10-18_83aa687dbd3cb71753c0ff469d249b6c_cryptolocker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	gewos.exe

Suspicious use of UnmapMainImage 2 IoCs

pid	Process
2320	2024-10-18_83aa687dbd3cb71753c0ff469d249b6c_cryptolocker.exe
1276	gewos.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2320 wrote to memory of 1276	2320	2024-10-18_83aa687dbd3cb71753c0ff469d249b6c_cryptolocker.exe	29
PID 2320 wrote to memory of 1276	2320	2024-10-18_83aa687dbd3cb71753c0ff469d249b6c_cryptolocker.exe	29
PID 2320 wrote to memory of 1276	2320	2024-10-18_83aa687dbd3cb71753c0ff469d249b6c_cryptolocker.exe	29
PID 2320 wrote to memory of 1276	2320	2024-10-18_83aa687dbd3cb71753c0ff469d249b6c_cryptolocker.exe	29

C:\Users\Admin\AppData\Local\Temp\2024-10-18_83aa687dbd3cb71753c0ff469d249b6c_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-10-18_83aa687dbd3cb71753c0ff469d249b6c_cryptolocker.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2320
- 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:1276

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

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Downloads

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

Filesize
58KB

MD5
87d775e4eb1b7fd3224da89c17fc3e8f

SHA1
5ecf1fd645ce3d125dbe77d5fc1d0a9e46a48b33

SHA256
0987c7f7c4d48d585d1f31a6055425e42f70ed8e1eeb4d0841813aa37d718191

SHA512
a00a74353acf48a11fcec0a0f3a7d600510e98fb62eb23cd3f65a88c05ace91dcca56a28724547beac8b96255fed03ed5821b988f619c37bfb39e466dc28dfb6

Download Submit
memory/1276-16-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/1276-25-0x0000000000340000-0x0000000000346000-memory.dmp

Filesize
24KB

Download
memory/1276-26-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/2320-0-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/2320-1-0x0000000000360000-0x0000000000366000-memory.dmp

Filesize
24KB

Download
memory/2320-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2320-9-0x0000000000360000-0x0000000000366000-memory.dmp

Filesize
24KB

Download