b7c4f5d91474b8d4eee14f6401c1befe6048f2da6065aa67d934f366c8f6dd0e

Analysis

max time kernel
149s
max time network
151s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
20/11/2024, 03:30

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General

Target

2024-11-20_76940a588ed7f57cbce148ff99350eda_cryptolocker.exe
Size

46KB
MD5

76940a588ed7f57cbce148ff99350eda
SHA1

7d2847d7a5193cfc7a8229aeaa1d159797a9ccbc
SHA256

b7c4f5d91474b8d4eee14f6401c1befe6048f2da6065aa67d934f366c8f6dd0e
SHA512

f8cb6fc991209dfce87ee8af69664d1cec25c8153a20d4032fc335778bd8515f7f88f6d82e1c921674dcb80e7decca03d574709a35d35b6f3bc762ac831f8095
SSDEEP

768:bODOw9UiamWUB2preAr+OfjH/0STX73OBqOZ1:bODOw9acifH+Yo

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2104	lossy.exe

Loads dropped DLL 1 IoCs

pid	Process
2148	2024-11-20_76940a588ed7f57cbce148ff99350eda_cryptolocker.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2148-0-0x0000000008000000-0x000000000800F000-memory.dmp	upx
behavioral1/files/0x00080000000120f9-11.dat	upx
behavioral1/memory/2148-15-0x0000000008000000-0x000000000800F000-memory.dmp	upx
behavioral1/memory/2104-25-0x0000000008000000-0x000000000800F000-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	lossy.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-11-20_76940a588ed7f57cbce148ff99350eda_cryptolocker.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2148 wrote to memory of 2104	2148	2024-11-20_76940a588ed7f57cbce148ff99350eda_cryptolocker.exe	30
PID 2148 wrote to memory of 2104	2148	2024-11-20_76940a588ed7f57cbce148ff99350eda_cryptolocker.exe	30
PID 2148 wrote to memory of 2104	2148	2024-11-20_76940a588ed7f57cbce148ff99350eda_cryptolocker.exe	30
PID 2148 wrote to memory of 2104	2148	2024-11-20_76940a588ed7f57cbce148ff99350eda_cryptolocker.exe	30

C:\Users\Admin\AppData\Local\Temp\2024-11-20_76940a588ed7f57cbce148ff99350eda_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-11-20_76940a588ed7f57cbce148ff99350eda_cryptolocker.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2148
- 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:2104

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
fc1e37413cff91913fcda6c7ff37d162

SHA1
c57c71b7050ccc011982b4cdc6910751a875e2bd

SHA256
0ddc3fc757707d6a8e9c27d6cef4a4466ed607fc3a84ff10ddf21e29ca818c7a

SHA512
a1169871e43c2ae291d0bf6f1f01357db324af69b05bbddf458b1862255927478e3c943bbeb96c56abc503361858bb0aec4b7c297bd1b832792d8f78b3af992e

Download Submit
memory/2104-18-0x0000000001C90000-0x0000000001C96000-memory.dmp

Filesize
24KB

Download
memory/2104-17-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2104-25-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download
memory/2148-0-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download
memory/2148-2-0x00000000003F0000-0x00000000003F6000-memory.dmp

Filesize
24KB

Download
memory/2148-1-0x00000000001C0000-0x00000000001C6000-memory.dmp

Filesize
24KB

Download
memory/2148-9-0x00000000001C0000-0x00000000001C6000-memory.dmp

Filesize
24KB

Download
memory/2148-15-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download