b61cdbf377ebe441c7bf6a40249390177179052931768f84ef8aa2883cedb465

Analysis

max time kernel
120s
max time network
101s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
19-09-2024 14:40

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General

Target

b61cdbf377ebe441c7bf6a40249390177179052931768f84ef8aa2883cedb465N.exe
Size

92KB
MD5

e98e21c7de4446ff510410062f41c0b0
SHA1

7bc820a063a8db19316920cfa163a26437656b30
SHA256

b61cdbf377ebe441c7bf6a40249390177179052931768f84ef8aa2883cedb465
SHA512

2f4d0af743c46f86d2b5a8b20217ebf70e7525dc137d20dbac86e140f194824b286a4813cd623617bb10e10f088ea2e0efe9abae45196ef2df2ab2f8d0475ce9
SSDEEP

768:eZCzNyrsbbRImy80EsgoNjoLO37AuS1+0u8J0DJWZYfouYzO8ZGjSjAsOmweG0Rp:NzUIb25A8ULw005o09WDuYHGjUAsOwRp

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-1-5-21-1302416131-1437503476-2806442725-1000\Control Panel\International\Geo\Nation	b61cdbf377ebe441c7bf6a40249390177179052931768f84ef8aa2883cedb465N.exe

Executes dropped EXE 1 IoCs

pid	Process
3556	conwurm.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1336-0-0x0000000000400000-0x0000000000418000-memory.dmp	upx
behavioral2/files/0x00080000000234e3-8.dat	upx
behavioral2/memory/1336-14-0x0000000000400000-0x0000000000418000-memory.dmp	upx
behavioral2/memory/3556-16-0x0000000000400000-0x0000000000418000-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	b61cdbf377ebe441c7bf6a40249390177179052931768f84ef8aa2883cedb465N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	conwurm.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1336 wrote to memory of 3556	1336	b61cdbf377ebe441c7bf6a40249390177179052931768f84ef8aa2883cedb465N.exe	82
PID 1336 wrote to memory of 3556	1336	b61cdbf377ebe441c7bf6a40249390177179052931768f84ef8aa2883cedb465N.exe	82
PID 1336 wrote to memory of 3556	1336	b61cdbf377ebe441c7bf6a40249390177179052931768f84ef8aa2883cedb465N.exe	82

C:\Users\Admin\AppData\Local\Temp\b61cdbf377ebe441c7bf6a40249390177179052931768f84ef8aa2883cedb465N.exe
"C:\Users\Admin\AppData\Local\Temp\b61cdbf377ebe441c7bf6a40249390177179052931768f84ef8aa2883cedb465N.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1336
- 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:3556

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

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Downloads

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

Filesize
92KB

MD5
5285e82eb9036107968fb02bbb9e9ced

SHA1
35f70a93f6ab927c3b534bca8a52c1931e16fd12

SHA256
afdd77c2d50faea4e8d982215e4e73c022b8f3274d7912d16e21dd8ffd87ebaf

SHA512
72de5e9e34015453b62acf77fbcae632077bf7177be3499c0f674d35040fe01166ebc8f2bf8545170a2df07754bd3ee7bbf00a5c5ebf3cceae80ff81a8a4f687

Download Submit
memory/1336-0-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download
memory/1336-1-0x0000000004000000-0x0000000004005000-memory.dmp

Filesize
20KB

Download
memory/1336-2-0x0000000004000000-0x0000000004005000-memory.dmp

Filesize
20KB

Download
memory/1336-4-0x0000000004000000-0x0000000004005000-memory.dmp

Filesize
20KB

Download
memory/1336-14-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download
memory/3556-15-0x0000000004000000-0x0000000004005000-memory.dmp

Filesize
20KB

Download
memory/3556-16-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download