f5cb5bea770a727188b8d6d6837c999cd0dfb3449646a9aa221ff1ad1e39c358

Analysis

max time kernel
150s
max time network
126s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
12/08/2024, 04:17

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

f5cb5bea770a727188b8d6d6837c999cd0dfb3449646a9aa221ff1ad1e39c358.exe
Size

63KB
MD5

f595c91ba1a84fa7106b6c33f819d031
SHA1

c7bef44ad500f496e16b6394e44a44e497ad941b
SHA256

f5cb5bea770a727188b8d6d6837c999cd0dfb3449646a9aa221ff1ad1e39c358
SHA512

f48ed329913ddbb76226a6dc45aa943aad9742378742659ec4ff77f3f5d9c60eee89067861bb32d6b5c9f27f063065438f1c8fdadac86766924ff4773818bda2
SSDEEP

1536:AEPpS76ydzGej0d4K20n2eN6RXBuOX8pK6fXx:AqS/dzJIr2q2eP

Score

7^/10

discovery upx

Malware Config

Signatures

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-523280732-2327480845-3730041215-1000\Control Panel\International\Geo\Nation	f5cb5bea770a727188b8d6d6837c999cd0dfb3449646a9aa221ff1ad1e39c358.exe

Executes dropped EXE 1 IoCs

pid	Process
4100	conwurm.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4780-0-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/files/0x00090000000233f7-8.dat	upx
behavioral2/memory/4780-13-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4100-14-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4100-17-0x0000000000400000-0x0000000000414000-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	f5cb5bea770a727188b8d6d6837c999cd0dfb3449646a9aa221ff1ad1e39c358.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	conwurm.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4780 wrote to memory of 4100	4780	f5cb5bea770a727188b8d6d6837c999cd0dfb3449646a9aa221ff1ad1e39c358.exe	84
PID 4780 wrote to memory of 4100	4780	f5cb5bea770a727188b8d6d6837c999cd0dfb3449646a9aa221ff1ad1e39c358.exe	84
PID 4780 wrote to memory of 4100	4780	f5cb5bea770a727188b8d6d6837c999cd0dfb3449646a9aa221ff1ad1e39c358.exe	84

C:\Users\Admin\AppData\Local\Temp\f5cb5bea770a727188b8d6d6837c999cd0dfb3449646a9aa221ff1ad1e39c358.exe
"C:\Users\Admin\AppData\Local\Temp\f5cb5bea770a727188b8d6d6837c999cd0dfb3449646a9aa221ff1ad1e39c358.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4780
- C:\Users\Admin\AppData\Local\Temp\conwurm.exe
  "C:\Users\Admin\AppData\Local\Temp\conwurm.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:4100

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\conwurm.exe

Filesize
63KB

MD5
e4471e36aea50b52dbc73c20e1822948

SHA1
1c6c02ea76e66d48c5da9f2a8d84a75054e9e4e0

SHA256
941c39c4ae820e059b8ad3507a3aed607a494d6a67f0da0b754f59daeaf61342

SHA512
faeae54a06ce300b6b67ad70506c5a81e64322fa784b8d98a153e4b1654068a24a758048a9590d7c03987e2139bace80483578ca1f3c26d7541be3ad9b41de31

Download Submit
memory/4100-14-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4100-17-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4780-0-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4780-1-0x0000000004000000-0x0000000004005000-memory.dmp

Filesize
20KB

Download
memory/4780-2-0x0000000004000000-0x0000000004005000-memory.dmp

Filesize
20KB

Download
memory/4780-4-0x0000000004000000-0x0000000004005000-memory.dmp

Filesize
20KB

Download
memory/4780-13-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download