75bb2ec180ea82aabeb4ab60deef9be750a5f8ff8b0ff2a2e3f41d576bfb9346

Analysis

max time kernel
132s
max time network
140s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
19-09-2024 06:33

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General

Target

2024-09-19_f74490a97d4215900da1e631e1b9e5c1_cryptolocker.exe
Size

59KB
MD5

f74490a97d4215900da1e631e1b9e5c1
SHA1

023fca2db469576cd0e0bc2e29e270cd779789d1
SHA256

75bb2ec180ea82aabeb4ab60deef9be750a5f8ff8b0ff2a2e3f41d576bfb9346
SHA512

f0769d2ea125cb28d699f15db092f4c0cd4c4fd7a1f91192f87e90c7e7e7939ded3d7a25ac9ea76af313e085d73750225d03bc5457f5dbee61163a933bf7e042
SSDEEP

768:H6LsoEEeegiZPvEhHSG+gk5NQXtckstOOtEvwDpjhBaD3TUogs/VXpAP6pe:H6QFElP6n+gou9cvMOtEvwDpjCpVXM

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1920	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
1700	2024-09-19_f74490a97d4215900da1e631e1b9e5c1_cryptolocker.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1700-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/1700-14-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000800000001211b-15.dat	upx
behavioral1/memory/1920-25-0x0000000000500000-0x0000000000510000-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	2024-09-19_f74490a97d4215900da1e631e1b9e5c1_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 1700 wrote to memory of 1920	1700	2024-09-19_f74490a97d4215900da1e631e1b9e5c1_cryptolocker.exe	30
PID 1700 wrote to memory of 1920	1700	2024-09-19_f74490a97d4215900da1e631e1b9e5c1_cryptolocker.exe	30
PID 1700 wrote to memory of 1920	1700	2024-09-19_f74490a97d4215900da1e631e1b9e5c1_cryptolocker.exe	30
PID 1700 wrote to memory of 1920	1700	2024-09-19_f74490a97d4215900da1e631e1b9e5c1_cryptolocker.exe	30

C:\Users\Admin\AppData\Local\Temp\2024-09-19_f74490a97d4215900da1e631e1b9e5c1_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-19_f74490a97d4215900da1e631e1b9e5c1_cryptolocker.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1700
- 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:1920

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

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

Filesize
59KB

MD5
0d5c7b6c7809dd96b0e017db43f53851

SHA1
8f5feb228c10e69df1acf668004d9f7c24b30706

SHA256
082774fd4aa91ac35e5d40083439fa8d62624cc759e9ecae1ace2a5d042226f9

SHA512
05d5b626f36db301c7d8d220dc1b3693fde5465f1cf8ea50484cde03f8b3914c41d96a2637c756f9ed827fd16ebb56e131c895c1d9deec6506858a3b0708b358

Download Submit
memory/1700-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1700-3-0x0000000000390000-0x0000000000396000-memory.dmp

Filesize
24KB

Download
memory/1700-2-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1700-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1700-14-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1920-18-0x00000000004A0000-0x00000000004A6000-memory.dmp

Filesize
24KB

Download
memory/1920-17-0x0000000000360000-0x0000000000366000-memory.dmp

Filesize
24KB

Download
memory/1920-25-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download