dc37e43c2b20a0fd9ad2ff092a7cd7ce0f0988c6eedf1b1b41ae4eb41cddf6c6

Analysis

max time kernel
150s
max time network
151s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
31-10-2024 08:28

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General

Target

2024-10-31_8c8fdb2b5cecce39d1ad55c55e0b1685_cryptolocker.exe
Size

46KB
MD5

8c8fdb2b5cecce39d1ad55c55e0b1685
SHA1

1d7ffa6eb9d70f2bbb8ec85925186828f8ad0759
SHA256

dc37e43c2b20a0fd9ad2ff092a7cd7ce0f0988c6eedf1b1b41ae4eb41cddf6c6
SHA512

4d2746adefc2983bea0d990a3e381ec081f97d26c34c3f510cb5677ddc28d4e7ee1ed77babc1f00955a2b70f426c294d6a1ef34b8c7b27eef982abcddea939c3
SSDEEP

768:bODOw9UiamWUB2preAr+OfjH/0STX73OBqc:bODOw9acifH+Yc

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2648	lossy.exe

Loads dropped DLL 1 IoCs

pid	Process
1672	2024-10-31_8c8fdb2b5cecce39d1ad55c55e0b1685_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1672-0-0x0000000008000000-0x000000000800F000-memory.dmp	upx
behavioral1/files/0x000a000000012033-11.dat	upx
behavioral1/memory/1672-15-0x0000000008000000-0x000000000800F000-memory.dmp	upx
behavioral1/memory/2648-16-0x0000000008000000-0x000000000800F000-memory.dmp	upx
behavioral1/memory/2648-25-0x0000000008000000-0x000000000800F000-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	2024-10-31_8c8fdb2b5cecce39d1ad55c55e0b1685_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 1672 wrote to memory of 2648	1672	2024-10-31_8c8fdb2b5cecce39d1ad55c55e0b1685_cryptolocker.exe	28
PID 1672 wrote to memory of 2648	1672	2024-10-31_8c8fdb2b5cecce39d1ad55c55e0b1685_cryptolocker.exe	28
PID 1672 wrote to memory of 2648	1672	2024-10-31_8c8fdb2b5cecce39d1ad55c55e0b1685_cryptolocker.exe	28
PID 1672 wrote to memory of 2648	1672	2024-10-31_8c8fdb2b5cecce39d1ad55c55e0b1685_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-10-31_8c8fdb2b5cecce39d1ad55c55e0b1685_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-10-31_8c8fdb2b5cecce39d1ad55c55e0b1685_cryptolocker.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1672
- 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:2648

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\lossy.exe

Filesize
46KB

MD5
10bd2000afdf0bf6b7c780cfad32705b

SHA1
0155baf21ee559bf34033be21fe53f8a3ff453ae

SHA256
d45252d1683ceec739d2f61867d7444c05634b59091c2f3ae744337ceb51f641

SHA512
ac18794fa8cbb77c2e846a62c23c0e7a34fad0fd11d6bcd1a68d83ab768386a21cb93378f80d5296d098134c416ad6df7d19afe0b78558ed0e204072fee85541

Download Submit
memory/1672-0-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download
memory/1672-2-0x0000000000560000-0x0000000000566000-memory.dmp

Filesize
24KB

Download
memory/1672-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1672-9-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1672-15-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download
memory/2648-16-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download
memory/2648-18-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/2648-25-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download