b8bb2e24e8c2a4efb74fb9d97ec7ded5ae2a57b1877e0516b6c85ca4eda4a7d0

Analysis

max time kernel
150s
max time network
153s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
20/11/2024, 03:36

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General

Target

2024-11-20_c8f25911bff6e973d3786664c801b5c7_cryptolocker.exe
Size

46KB
MD5

c8f25911bff6e973d3786664c801b5c7
SHA1

122fef7c6f942c77b083eb4efd4d9d92abcc25b2
SHA256

b8bb2e24e8c2a4efb74fb9d97ec7ded5ae2a57b1877e0516b6c85ca4eda4a7d0
SHA512

5d93d1ce025483ee24ca912d92dbe89908c961144f6943679b2e9618f2240dfca8422bfd255cc7fe024741926c8647cecb006d873a77ee0b050bd9e08c367e82
SSDEEP

768:bODOw9UiamWUB2preAr+OfjH/0STX73OBqOZ0:bODOw9acifH+Yx

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2128	lossy.exe

Loads dropped DLL 1 IoCs

pid	Process
1220	2024-11-20_c8f25911bff6e973d3786664c801b5c7_cryptolocker.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1220-0-0x0000000008000000-0x000000000800F000-memory.dmp	upx
behavioral1/files/0x000a00000001202c-11.dat	upx
behavioral1/memory/1220-14-0x0000000008000000-0x000000000800F000-memory.dmp	upx
behavioral1/memory/2128-25-0x0000000008000000-0x000000000800F000-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	2024-11-20_c8f25911bff6e973d3786664c801b5c7_cryptolocker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	lossy.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1220 wrote to memory of 2128	1220	2024-11-20_c8f25911bff6e973d3786664c801b5c7_cryptolocker.exe	30
PID 1220 wrote to memory of 2128	1220	2024-11-20_c8f25911bff6e973d3786664c801b5c7_cryptolocker.exe	30
PID 1220 wrote to memory of 2128	1220	2024-11-20_c8f25911bff6e973d3786664c801b5c7_cryptolocker.exe	30
PID 1220 wrote to memory of 2128	1220	2024-11-20_c8f25911bff6e973d3786664c801b5c7_cryptolocker.exe	30

C:\Users\Admin\AppData\Local\Temp\2024-11-20_c8f25911bff6e973d3786664c801b5c7_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-11-20_c8f25911bff6e973d3786664c801b5c7_cryptolocker.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1220
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:2128

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\lossy.exe

Filesize
46KB

MD5
6827d357b0b40811cb5c0155969c1109

SHA1
3a39362a10490db43813b154edb06ffd3ae09df6

SHA256
3d161a9f8b96f475a173615da8b2c56a2f8a4883a65614d9a671427a4860ed53

SHA512
a6660da7d192e282442a26e545091fabe280341d1fa0899f160745ebe2e17e8609f65ea0ce5216df618ed1230cdcbebe26de1eb390ba44820369982bab0f7de8

Download Submit
memory/1220-0-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download
memory/1220-1-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download
memory/1220-9-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download
memory/1220-2-0x0000000000370000-0x0000000000376000-memory.dmp

Filesize
24KB

Download
memory/1220-14-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download
memory/2128-17-0x0000000000340000-0x0000000000346000-memory.dmp

Filesize
24KB

Download
memory/2128-24-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2128-25-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download