571d83a6dcbd429d3986481716794ce92504e73ef2f3188e42433de5ef89a296

Analysis

max time kernel
132s
max time network
139s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
11/09/2024, 04:34

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General

Target

2024-09-11_cfbffd949b881883790d0b03ad860610_cryptolocker.exe
Size

90KB
MD5

cfbffd949b881883790d0b03ad860610
SHA1

0a9b0b60f0382a988c21250ea4ce753774e0e787
SHA256

571d83a6dcbd429d3986481716794ce92504e73ef2f3188e42433de5ef89a296
SHA512

4cb932fa3fd443510433c4b42f24b3bef95d0de01b935c4176e61c07a118751b3c58ffa80668ebade2b0a8ada43f67fd4822707603c21fcd042a78f5c5ea7bf0
SSDEEP

1536:n6QFElP6n+g9u9cvMOtEvwDpjYYTjipvF2bx1PQAi:n6a+1SEOtEvwDpjYYvQd2Pi

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2080	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2092	2024-09-11_cfbffd949b881883790d0b03ad860610_cryptolocker.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2092-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2092-15-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x00080000000120fb-14.dat	upx
behavioral1/memory/2080-25-0x0000000000500000-0x0000000000510000-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	2024-09-11_cfbffd949b881883790d0b03ad860610_cryptolocker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	asih.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2092 wrote to memory of 2080	2092	2024-09-11_cfbffd949b881883790d0b03ad860610_cryptolocker.exe	30
PID 2092 wrote to memory of 2080	2092	2024-09-11_cfbffd949b881883790d0b03ad860610_cryptolocker.exe	30
PID 2092 wrote to memory of 2080	2092	2024-09-11_cfbffd949b881883790d0b03ad860610_cryptolocker.exe	30
PID 2092 wrote to memory of 2080	2092	2024-09-11_cfbffd949b881883790d0b03ad860610_cryptolocker.exe	30

C:\Users\Admin\AppData\Local\Temp\2024-09-11_cfbffd949b881883790d0b03ad860610_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-11_cfbffd949b881883790d0b03ad860610_cryptolocker.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2092
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:2080

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

C:\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
90KB

MD5
b47c21c9d60b936b829a34463a866320

SHA1
8ecb15fa263ee80b5cb6d690b6ba8a820f3e311b

SHA256
bec8e95ad267dcecbc62b55f6a41bb05feabea3b2fee7833d628b6d7c6afb43b

SHA512
958fbfa68755ab9b6f2966599dd1cea7e7b6a441ef64ed27818c2cde0908a17855cb8dc80c9cd2200a1212c156518e48e7f35f16f2621cbc65dc85f00f338c22

Download Submit
memory/2080-17-0x0000000000480000-0x0000000000486000-memory.dmp

Filesize
24KB

Download
memory/2080-24-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2080-25-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2092-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2092-1-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2092-2-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2092-3-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/2092-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download