b3fb55f9b18f0c435f00ad9bf8f0001262f3d0d7a301222cff26fb1d0e0903f6

Analysis

max time kernel
267s
max time network
310s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
11-02-2023 17:41

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General

Target

b3fb55f9b18f0c435f00ad9bf8f0001262f3d0d7a301222cff26fb1d0e0903f6.exe
Size

277KB
MD5

cb80db5a6aa3601c20f9a727a075ad8c
SHA1

6b8b3a55c27f401180cd03c9cd411b12b2c9a199
SHA256

b3fb55f9b18f0c435f00ad9bf8f0001262f3d0d7a301222cff26fb1d0e0903f6
SHA512

37ac56a9351bf57946d8cdc130a0f1a694d5d10e2dce29ae55d95862d1f52b85671b1ceb911fbfb38ba1ae7941fafb1eea329dde418533fb01f79ec5cf079e06
SSDEEP

6144:OXzKdNY49u8rVAvuCa9Mlr5xuRrUO01netn:Va4ATmT+lNxm018

Score

7^/10

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-1-5-21-2971393436-602173351-1645505021-1000\Control Panel\International\Geo\Nation	b3fb55f9b18f0c435f00ad9bf8f0001262f3d0d7a301222cff26fb1d0e0903f6.exe

Executes dropped EXE 2 IoCs

pid	Process
2492	ITS SB App Switch.exe
4512	ITS SB App Switch.exe

UPX packed file 1 IoCs

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

upx

resource	yara_rule
behavioral1/memory/224-132-0x0000000000060000-0x0000000000100000-memory.dmp	upx

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
224	b3fb55f9b18f0c435f00ad9bf8f0001262f3d0d7a301222cff26fb1d0e0903f6.exe
224	b3fb55f9b18f0c435f00ad9bf8f0001262f3d0d7a301222cff26fb1d0e0903f6.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 224 wrote to memory of 2492	224	b3fb55f9b18f0c435f00ad9bf8f0001262f3d0d7a301222cff26fb1d0e0903f6.exe	84
PID 224 wrote to memory of 2492	224	b3fb55f9b18f0c435f00ad9bf8f0001262f3d0d7a301222cff26fb1d0e0903f6.exe	84
PID 224 wrote to memory of 2492	224	b3fb55f9b18f0c435f00ad9bf8f0001262f3d0d7a301222cff26fb1d0e0903f6.exe	84
PID 224 wrote to memory of 4512	224	b3fb55f9b18f0c435f00ad9bf8f0001262f3d0d7a301222cff26fb1d0e0903f6.exe	85
PID 224 wrote to memory of 4512	224	b3fb55f9b18f0c435f00ad9bf8f0001262f3d0d7a301222cff26fb1d0e0903f6.exe	85
PID 224 wrote to memory of 4512	224	b3fb55f9b18f0c435f00ad9bf8f0001262f3d0d7a301222cff26fb1d0e0903f6.exe	85

C:\Users\Admin\AppData\Local\Temp\b3fb55f9b18f0c435f00ad9bf8f0001262f3d0d7a301222cff26fb1d0e0903f6.exe
"C:\Users\Admin\AppData\Local\Temp\b3fb55f9b18f0c435f00ad9bf8f0001262f3d0d7a301222cff26fb1d0e0903f6.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:224
- C:\Users\Admin\AppData\Local\Temp\ITS\wincsecb\264\Production\ITS SB App Switch.exe
  "C:\Users\Admin\AppData\Local\Temp\ITS\wincsecb\264\Production\ITS SB App Switch.exe"
  2⤵
  - Executes dropped EXE
  PID:2492
- C:\Users\Admin\AppData\Local\Temp\ITS\wincsecb\264\Production\ITS SB App Switch.exe
  "C:\Users\Admin\AppData\Local\Temp\ITS\wincsecb\264\Production\ITS SB App Switch.exe"
  2⤵
  - Executes dropped EXE
  PID:4512

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\ITS\wincsecb\264\Production\ITS SB App Switch.exe

Filesize
87KB

MD5
368332fca74f48697d842c5f4698ae1d

SHA1
0275153a1e62bd0eca0b02168895517ed66aac56

SHA256
3a4a5b128c3a042010824fd33b719466b0d9320aa051ca3d5f1690124766ad59

SHA512
fd9f1d1a4337e00fef5e9ea10a7fdf553e98df2cf2fdf818b68689a89de3c1d324de389e0c9ef863fef08a3dff8150db173b2203e9e92efaea67865e8d2805b5

Download Submit
C:\Users\Admin\AppData\Local\Temp\ITS\wincsecb\264\Production\ITS SB App Switch.exe

Filesize
87KB

MD5
368332fca74f48697d842c5f4698ae1d

SHA1
0275153a1e62bd0eca0b02168895517ed66aac56

SHA256
3a4a5b128c3a042010824fd33b719466b0d9320aa051ca3d5f1690124766ad59

SHA512
fd9f1d1a4337e00fef5e9ea10a7fdf553e98df2cf2fdf818b68689a89de3c1d324de389e0c9ef863fef08a3dff8150db173b2203e9e92efaea67865e8d2805b5

Download Submit
C:\Users\Admin\AppData\Local\Temp\ITS\wincsecb\264\Production\ITS SB App Switch.exe

Filesize
87KB

MD5
368332fca74f48697d842c5f4698ae1d

SHA1
0275153a1e62bd0eca0b02168895517ed66aac56

SHA256
3a4a5b128c3a042010824fd33b719466b0d9320aa051ca3d5f1690124766ad59

SHA512
fd9f1d1a4337e00fef5e9ea10a7fdf553e98df2cf2fdf818b68689a89de3c1d324de389e0c9ef863fef08a3dff8150db173b2203e9e92efaea67865e8d2805b5

Download Submit
memory/224-132-0x0000000000060000-0x0000000000100000-memory.dmp

Filesize
640KB

Download