966138062c6ebfb50c1a2e61ee786827008ec81e1d0f2dac1890fede46b36bc4

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
03/02/2024, 06:03

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General

Target

8b95efd16205658619dd2ba7cc7482c3.exe
Size

49KB
MD5

8b95efd16205658619dd2ba7cc7482c3
SHA1

6e47794c7c9185f330c3ecc8bca3e14a1518d830
SHA256

966138062c6ebfb50c1a2e61ee786827008ec81e1d0f2dac1890fede46b36bc4
SHA512

2099e54cacd8886c97475875241351ef1405ff15ea1bb1aa81ef570602f0bd5225a25365e149b953885598653705f1a9953857e6fd57f4e218eae9b3f0818800
SSDEEP

768:JxXVDhLzFA2FIh84YhgPNX0qSALoSdP/tln8kDDXkezIGwx4fGdsMRXUKDOkMdHD:Jx1lLFM825TLo+NyMwxQG6B3MYsi1

Score

7^/10

persistence

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-1-5-21-2398549320-3657759451-817663969-1000\Control Panel\International\Geo\Nation	8b95efd16205658619dd2ba7cc7482c3.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\braviax = "C:\\Windows\\system32\\braviax.exe"	8b95efd16205658619dd2ba7cc7482c3.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2398549320-3657759451-817663969-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\braviax = "C:\\Windows\\system32\\braviax.exe"	8b95efd16205658619dd2ba7cc7482c3.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\braviax.exe	8b95efd16205658619dd2ba7cc7482c3.exe

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

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3688 wrote to memory of 1328	3688	8b95efd16205658619dd2ba7cc7482c3.exe	84
PID 3688 wrote to memory of 1328	3688	8b95efd16205658619dd2ba7cc7482c3.exe	84
PID 3688 wrote to memory of 1328	3688	8b95efd16205658619dd2ba7cc7482c3.exe	84

C:\Users\Admin\AppData\Local\Temp\8b95efd16205658619dd2ba7cc7482c3.exe
"C:\Users\Admin\AppData\Local\Temp\8b95efd16205658619dd2ba7cc7482c3.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:3688
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\delself.bat" "
  2⤵
  PID:1328

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\delself.bat

Filesize
202B

MD5
c9e1130e113ce6cd5614536e0082800d

SHA1
187c5c1f815ea68c92fc7eed9aaa67dfce8fd6f0

SHA256
fe121ec888abb4963abe0acfd5e778d20122ebd7606ce325d5264296c470048b

SHA512
bee5966ed7242191c710c4cf92947d05e02d97cf00bd81195e97f09afbb242a470e5a13c9d09fa9f804f2607e34d95e31d8533ca88ba6cfa4f9fb9f62aced314

Download Submit
memory/3688-0-0x0000000000400000-0x000000000040F000-memory.dmp

Filesize
60KB

Download
memory/3688-1-0x00000000005B0000-0x00000000005BC000-memory.dmp

Filesize
48KB

Download
memory/3688-7-0x0000000000400000-0x000000000040F000-memory.dmp

Filesize
60KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads