a3f668c69322edf30fd8e754f580554b268527ee4db9a634dae936dc66525ef1

Analysis

max time kernel
141s
max time network
139s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
19/09/2024, 03:27

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General

Target

2024-09-19_40ecda2420c543cc2889f9222abeb647_cryptolocker.exe
Size

39KB
MD5

40ecda2420c543cc2889f9222abeb647
SHA1

a367ded985c1b7e4697af6fb54d7971125a7c500
SHA256

a3f668c69322edf30fd8e754f580554b268527ee4db9a634dae936dc66525ef1
SHA512

34e3f88e2c9500c139c46205e21c8cbc1087c93da8bf304b96fba5d7797acade5cfb624b99d1b42808725598ac42a0b4f41c7cdf08bc7c4dacc724210204c2e0
SSDEEP

768:qUmnjFom/kLyMro2GtOOtEvwDpjeMLam5axK3Dn:qUmnpomddpMOtEvwDpjjaYaQT

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2428	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2580	2024-09-19_40ecda2420c543cc2889f9222abeb647_cryptolocker.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2580-8-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/files/0x0008000000012102-11.dat	upx
behavioral1/memory/2580-13-0x0000000000600000-0x000000000060F000-memory.dmp	upx
behavioral1/memory/2428-26-0x0000000000500000-0x000000000050F000-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	asih.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-09-19_40ecda2420c543cc2889f9222abeb647_cryptolocker.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2580 wrote to memory of 2428	2580	2024-09-19_40ecda2420c543cc2889f9222abeb647_cryptolocker.exe	30
PID 2580 wrote to memory of 2428	2580	2024-09-19_40ecda2420c543cc2889f9222abeb647_cryptolocker.exe	30
PID 2580 wrote to memory of 2428	2580	2024-09-19_40ecda2420c543cc2889f9222abeb647_cryptolocker.exe	30
PID 2580 wrote to memory of 2428	2580	2024-09-19_40ecda2420c543cc2889f9222abeb647_cryptolocker.exe	30

C:\Users\Admin\AppData\Local\Temp\2024-09-19_40ecda2420c543cc2889f9222abeb647_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-19_40ecda2420c543cc2889f9222abeb647_cryptolocker.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2580
- 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:2428

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\asih.exe

Filesize
39KB

MD5
ad35aecbcb2a1008b9d69da8d803bb2b

SHA1
e9560bdbd1e408b393b15545ff935c285d5380d0

SHA256
5ace45a5dfda1ec48573c464e8b7b7c3fc85a09e505c50b430201d99a9ed9d51

SHA512
9a1659e1725101b67028d9556c222cfe23b40321b5a3b87bbb15a8d06f80711407f835a13486453ced87c3081cf277624e791a9411a6f4078f3a017ed99cebb0

Download Submit
memory/2428-18-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/2428-25-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2428-26-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2580-9-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2580-8-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2580-1-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2580-0-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2580-13-0x0000000000600000-0x000000000060F000-memory.dmp

Filesize
60KB

Download