ad716b9b395d65dca7a31117215c2adedf392162eab7beee500f8061db4785c0

Analysis

max time kernel
143s
max time network
126s
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 01:59

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General

Target

6bbbf2b1e89ed9d3b1bba44fc9acec53.exe
Size

308KB
MD5

6bbbf2b1e89ed9d3b1bba44fc9acec53
SHA1

bb6b962ba30a55a9cbb87030bdd282223e42a48d
SHA256

ad716b9b395d65dca7a31117215c2adedf392162eab7beee500f8061db4785c0
SHA512

a7651ba72b4b45f3f4a7901412d1d3b41f8847fd59b15b9a61092cb9a2c4bc38aa1a2d274b549e49608e70b4ff1f4ab120a814e1fd5cffe7dd8d1a644aa737a0
SSDEEP

6144:bOsY+HgEiTA14Xn0Ti8v1bbFgXIQdjrfzNt1sEP3:i814Xn0Ti8tbJyIQdjrfzCEP3

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 4492 784 rundll32.exe

description	pid	pid_target	process	target process
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4492	784	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:

6bbbf2b1e89ed9d3b1bba44fc9acec53.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-4238149048-355649189-894321705-1000\Control Panel\International\Geo\Nation	6bbbf2b1e89ed9d3b1bba44fc9acec53.exe

Loads dropped DLL 1 IoCs

Processes:

rundll32.exe

pid process

224 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

4196 224 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 18 Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)

pid	process
224	rundll32.exe

pid	pid_target	process	target process
4196	224	WerFault.exe	rundll32.exe

description	flow	ioc
HTTP User-Agent header	18	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)

Suspicious use of SetWindowsHookEx 4 IoCs

Processes:

6bbbf2b1e89ed9d3b1bba44fc9acec53.exe6bbbf2b1e89ed9d3b1bba44fc9acec53.exe

pid	process
2300	6bbbf2b1e89ed9d3b1bba44fc9acec53.exe
2300	6bbbf2b1e89ed9d3b1bba44fc9acec53.exe
3228	6bbbf2b1e89ed9d3b1bba44fc9acec53.exe
3228	6bbbf2b1e89ed9d3b1bba44fc9acec53.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

6bbbf2b1e89ed9d3b1bba44fc9acec53.exerundll32.exe

description	pid	process	target process
PID 2300 wrote to memory of 3228	2300	6bbbf2b1e89ed9d3b1bba44fc9acec53.exe	6bbbf2b1e89ed9d3b1bba44fc9acec53.exe
PID 2300 wrote to memory of 3228	2300	6bbbf2b1e89ed9d3b1bba44fc9acec53.exe	6bbbf2b1e89ed9d3b1bba44fc9acec53.exe
PID 2300 wrote to memory of 3228	2300	6bbbf2b1e89ed9d3b1bba44fc9acec53.exe	6bbbf2b1e89ed9d3b1bba44fc9acec53.exe
PID 4492 wrote to memory of 224	4492	rundll32.exe	rundll32.exe
PID 4492 wrote to memory of 224	4492	rundll32.exe	rundll32.exe
PID 4492 wrote to memory of 224	4492	rundll32.exe	rundll32.exe

C:\Users\Admin\AppData\Local\Temp\6bbbf2b1e89ed9d3b1bba44fc9acec53.exe
"C:\Users\Admin\AppData\Local\Temp\6bbbf2b1e89ed9d3b1bba44fc9acec53.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2300

C:\Users\Admin\AppData\Local\Temp\6bbbf2b1e89ed9d3b1bba44fc9acec53.exe
"C:\Users\Admin\AppData\Local\Temp\6bbbf2b1e89ed9d3b1bba44fc9acec53.exe" -h
2⤵
- Suspicious use of SetWindowsHookEx
PID:3228

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:4492

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe "C:\Users\Admin\AppData\Local\Temp\db.dll",open
2⤵
- Loads dropped DLL
PID:224

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 224 -s 572
3⤵
- Program crash
PID:4196

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 224 -ip 224
1⤵
PID:4500

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
ee5d452cc4ee71e1f544582bf6fca143

SHA1
a193952075b2b4a83759098754e814a931b8ba90

SHA256
f5cb9476e4b5576bb94eae1d278093b6470b0238226d4c05ec8c76747d57cbfe

SHA512
7a935ae3df65b949c5e7f1ed93bd2173165ef4e347ceb5879725fbb995aedeef853b5b1dc4c4155d423f34d004f8a0df59258cefdad5f49e617d0a74764c896b

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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