32e60467041b40146d87fc1c8c734f60f7e3763820e0c2a852a801c8afd1c7ab

Analysis

max time kernel
78s
max time network
129s
platform
windows10-2004_x64
resource
win10v2004-20230220-en
resource tags

arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
submitted
09-03-2023 04:21

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General

Target

bf48a5cd9169a5826521a8a33b21adee.exe
Size

308KB
MD5

bf48a5cd9169a5826521a8a33b21adee
SHA1

b769421d41836cb6fb1bfc624207ed4f2eac57b5
SHA256

32e60467041b40146d87fc1c8c734f60f7e3763820e0c2a852a801c8afd1c7ab
SHA512

a40ab338563540aaac258b62f29195e56432d137ce4052aee24cec4f01e4c115f116392f7657b9a9dbe2f0b05ff79818520a417ec3608892cbd68c69e9a25a71
SSDEEP

6144:bOsY+HgEiTA14Xn0Ti8v1bbFgXIQdjrfzNt1KEP3:i814Xn0Ti8tbJyIQdjrfzQEP3

Score

10^/10

Malware Config

Signatures

Process spawned unexpected child process 1 IoCs
This typically indicates the parent process was compromised via an exploit or macro.

Processes:

rundll32.exe

description pid pid_target process target process

Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 4996 4784 rundll32.exe

description	pid	pid_target	process	target process
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4996	4784	rundll32.exe

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

Processes:

bf48a5cd9169a5826521a8a33b21adee.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\Control Panel\International\Geo\Nation	bf48a5cd9169a5826521a8a33b21adee.exe

Loads dropped DLL 1 IoCs

Processes:

rundll32.exe

pid process

4968 rundll32.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

2192 4968 WerFault.exe rundll32.exe
Script User-Agent 1 IoCs
Uses user-agent string associated with script host/environment.

Processes:

description flow ioc

HTTP User-Agent header 14 Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)

pid	process
4968	rundll32.exe

pid	pid_target	process	target process
2192	4968	WerFault.exe	rundll32.exe

description	flow	ioc
HTTP User-Agent header	14	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)

Suspicious use of SetWindowsHookEx 4 IoCs

Processes:

bf48a5cd9169a5826521a8a33b21adee.exebf48a5cd9169a5826521a8a33b21adee.exe

pid	process
1500	bf48a5cd9169a5826521a8a33b21adee.exe
1500	bf48a5cd9169a5826521a8a33b21adee.exe
1896	bf48a5cd9169a5826521a8a33b21adee.exe
1896	bf48a5cd9169a5826521a8a33b21adee.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

bf48a5cd9169a5826521a8a33b21adee.exerundll32.exe

description	pid	process	target process
PID 1500 wrote to memory of 1896	1500	bf48a5cd9169a5826521a8a33b21adee.exe	bf48a5cd9169a5826521a8a33b21adee.exe
PID 1500 wrote to memory of 1896	1500	bf48a5cd9169a5826521a8a33b21adee.exe	bf48a5cd9169a5826521a8a33b21adee.exe
PID 1500 wrote to memory of 1896	1500	bf48a5cd9169a5826521a8a33b21adee.exe	bf48a5cd9169a5826521a8a33b21adee.exe
PID 4996 wrote to memory of 4968	4996	rundll32.exe	rundll32.exe
PID 4996 wrote to memory of 4968	4996	rundll32.exe	rundll32.exe
PID 4996 wrote to memory of 4968	4996	rundll32.exe	rundll32.exe

C:\Users\Admin\AppData\Local\Temp\bf48a5cd9169a5826521a8a33b21adee.exe
"C:\Users\Admin\AppData\Local\Temp\bf48a5cd9169a5826521a8a33b21adee.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1500

C:\Users\Admin\AppData\Local\Temp\bf48a5cd9169a5826521a8a33b21adee.exe
"C:\Users\Admin\AppData\Local\Temp\bf48a5cd9169a5826521a8a33b21adee.exe" -h
2⤵
- Suspicious use of SetWindowsHookEx
PID:1896

C:\Windows\system32\rundll32.exe
rundll32.exe "C:\Users\Admin\AppData\Local\Temp\db.dll",open
1⤵
- Process spawned unexpected child process
- Suspicious use of WriteProcessMemory
PID:4996

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe "C:\Users\Admin\AppData\Local\Temp\db.dll",open
2⤵
- Loads dropped DLL
PID:4968

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4968 -s 600
3⤵
- Program crash
PID:2192

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 364 -p 4968 -ip 4968
1⤵
PID:2356

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\db.dat

Filesize
557KB

MD5
819ae848dc8b172ef0db45a423cc4024

SHA1
e78a66524da011216a63d9936bd4b22b9d0335d2

SHA256
1213515bf29bf5dbedd80835b8cf1310b952525fcc716faf0b3d602930cacf24

SHA512
a8fe171c6edc22ee62999c70167a9d904d5d94a50e9dca7a7240dbd6a14b0e684fc19d5bc99dfbd3a82bdf8ccb62f6144a8b310f77432224631ac428ded0b084

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C:\Users\Admin\AppData\Local\Temp\db.dll

Filesize
52KB

MD5
1b20e998d058e813dfc515867d31124f

SHA1
c9dc9c42a748af18ae1a8c882b90a2b9e3313e6f

SHA256
24a53033a2e89acf65f6a5e60d35cb223585817032635e81bf31264eb7dabd00

SHA512
79849fbdb9a9e7f7684b570d14662448b093b8aa2b23dfd95856db3a78faf75a95d95c51b8aa8506c4fbecffebcc57cd153dda38c830c05b8cd38629fae673c6

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C:\Users\Admin\AppData\Local\Temp\db.dll

Filesize
52KB

MD5
1b20e998d058e813dfc515867d31124f

SHA1
c9dc9c42a748af18ae1a8c882b90a2b9e3313e6f

SHA256
24a53033a2e89acf65f6a5e60d35cb223585817032635e81bf31264eb7dabd00

SHA512
79849fbdb9a9e7f7684b570d14662448b093b8aa2b23dfd95856db3a78faf75a95d95c51b8aa8506c4fbecffebcc57cd153dda38c830c05b8cd38629fae673c6

Download Submit