615e4dd2df36c3ed9398c1f7f249fe64338e779a91c7ea6b6fab9affb6c20877

Analysis

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

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
01/10/2024, 00:40

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General

Target

2024-10-01_d330a1c2be9ecf64b084d9cc559d5cbe_cryptolocker.exe
Size

52KB
MD5

d330a1c2be9ecf64b084d9cc559d5cbe
SHA1

7e1f86325ef2e11ddf0b819ac83ef666a278b787
SHA256

615e4dd2df36c3ed9398c1f7f249fe64338e779a91c7ea6b6fab9affb6c20877
SHA512

054136d75b5aa3d9298fdeb0532f42ab3db791c9e88d70177332024e88e3669e7873db638c58ba333fe90093ee52071f33d5293396df6d89b0ed4c33d9c4fd0a
SSDEEP

768:bODOw9UiamWUB2preAr+OfjH/0S16avdrQFiLjJvtXa:bODOw9acifAoc+vXa

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2312	lossy.exe

Loads dropped DLL 1 IoCs

pid	Process
2248	2024-10-01_d330a1c2be9ecf64b084d9cc559d5cbe_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2248-0-0x0000000008000000-0x000000000800F000-memory.dmp	upx
behavioral1/memory/2312-16-0x0000000008000000-0x000000000800F000-memory.dmp	upx
behavioral1/memory/2248-15-0x0000000008000000-0x000000000800F000-memory.dmp	upx
behavioral1/files/0x000c00000001226a-14.dat	upx
behavioral1/memory/2312-26-0x0000000008000000-0x000000000800F000-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	2024-10-01_d330a1c2be9ecf64b084d9cc559d5cbe_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 2248 wrote to memory of 2312	2248	2024-10-01_d330a1c2be9ecf64b084d9cc559d5cbe_cryptolocker.exe	31
PID 2248 wrote to memory of 2312	2248	2024-10-01_d330a1c2be9ecf64b084d9cc559d5cbe_cryptolocker.exe	31
PID 2248 wrote to memory of 2312	2248	2024-10-01_d330a1c2be9ecf64b084d9cc559d5cbe_cryptolocker.exe	31
PID 2248 wrote to memory of 2312	2248	2024-10-01_d330a1c2be9ecf64b084d9cc559d5cbe_cryptolocker.exe	31

C:\Users\Admin\AppData\Local\Temp\2024-10-01_d330a1c2be9ecf64b084d9cc559d5cbe_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-10-01_d330a1c2be9ecf64b084d9cc559d5cbe_cryptolocker.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2248
- 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:2312

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\lossy.exe

Filesize
52KB

MD5
1ef045aa577c797beb8c1c30a211422f

SHA1
6d51c496fca6144a51a3f99b72c6f9a56855cd54

SHA256
8a2c2a3c7175fd2519225e536893371875ee641492579e3afadcd5439cf17417

SHA512
b5b2e354986b815d2a4bb96d4135fb08c8ea9896adc1286a4cc694523473fded8302f71c22aa9f466d4a8c28857173868869bdd83307df3d99e2865f0bed543b

Download Submit
memory/2248-0-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download
memory/2248-1-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2248-2-0x0000000000460000-0x0000000000466000-memory.dmp

Filesize
24KB

Download
memory/2248-9-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2248-15-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download
memory/2312-16-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download
memory/2312-25-0x0000000000440000-0x0000000000446000-memory.dmp

Filesize
24KB

Download
memory/2312-18-0x0000000001BB0000-0x0000000001BB6000-memory.dmp

Filesize
24KB

Download
memory/2312-26-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download