b31de050143ff4e69d8a7ae9b02a17511a18d8e52ba94d6326920c0bbfa11f8c

Analysis

max time kernel
141s
max time network
140s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
11/10/2024, 23:41

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General

Target

2024-10-11_09f27a6e4e31abc089f45c4621c34ec4_cryptolocker.exe
Size

37KB
MD5

09f27a6e4e31abc089f45c4621c34ec4
SHA1

76da26605ed5779523f4303a62a2bf77b61ac9ac
SHA256

b31de050143ff4e69d8a7ae9b02a17511a18d8e52ba94d6326920c0bbfa11f8c
SHA512

f25fb168eaba2dc1803a47dc40528feb88480225f3e8932bf72e1d61faeb1330916b3b848fd2962d261f1e64c5c61b38391f2d8b34e430ec29e2b5acfe56a911
SSDEEP

768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkIT6V:qDdFJy3QMOtEvwDpjjWMl7T6V

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1660	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
1668	2024-10-11_09f27a6e4e31abc089f45c4621c34ec4_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1668-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000c000000012263-11.dat	upx
behavioral1/memory/1668-16-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/1660-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/1660-26-0x0000000000500000-0x0000000000510000-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	2024-10-11_09f27a6e4e31abc089f45c4621c34ec4_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 1668 wrote to memory of 1660	1668	2024-10-11_09f27a6e4e31abc089f45c4621c34ec4_cryptolocker.exe	31
PID 1668 wrote to memory of 1660	1668	2024-10-11_09f27a6e4e31abc089f45c4621c34ec4_cryptolocker.exe	31
PID 1668 wrote to memory of 1660	1668	2024-10-11_09f27a6e4e31abc089f45c4621c34ec4_cryptolocker.exe	31
PID 1668 wrote to memory of 1660	1668	2024-10-11_09f27a6e4e31abc089f45c4621c34ec4_cryptolocker.exe	31

C:\Users\Admin\AppData\Local\Temp\2024-10-11_09f27a6e4e31abc089f45c4621c34ec4_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-10-11_09f27a6e4e31abc089f45c4621c34ec4_cryptolocker.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1668
- 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:1660

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\asih.exe

Filesize
37KB

MD5
59318cadd9d72a6ca73b0200ef1dcaf3

SHA1
1329969f69707347532df053ffcc094c62a127da

SHA256
2af61501278709807914a5d45052ad691c440a673532c72ad4d04781c1f8b604

SHA512
3bcb606e5d6dd3059167b8be358e2e6187f64f90aa14b7d341d28f320eae1a2008b22146a0911920040fb2d33544060b56d1ab25d050d92205602fe42805944b

Download Submit
memory/1660-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1660-19-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/1660-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1668-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1668-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1668-2-0x0000000000350000-0x0000000000356000-memory.dmp

Filesize
24KB

Download
memory/1668-9-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1668-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download