b90881253b8f09257ea24dc20a27549ce7887683addc800dc6c7eea5d9d7e171

Analysis

max time kernel
151s
max time network
79s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
06/11/2022, 07:38

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General

Target

b90881253b8f09257ea24dc20a27549ce7887683addc800dc6c7eea5d9d7e171.exe
Size

589KB
MD5

3062f63b33dc01597a4b1218d3307a36
SHA1

cd50f454d3dbd7cf49b7dc8f511d97d7fcdaad8e
SHA256

b90881253b8f09257ea24dc20a27549ce7887683addc800dc6c7eea5d9d7e171
SHA512

a2dddf49fcaf10d0b1601773c457c86e0f8aa45a3b18bb7d66000e2794afa918ff6bca164d007f9a4a7a71af2d85ff1ed6147bef170442f50fcf1355e07df2fb
SSDEEP

12288:bdhX/npSI0RKUz3U6ilyL02hYSkns7Ti3Jrb9iH3wn/tWF6jM:bHX/gICKn6il80Zs7TApbe4sYY

Score

8^/10

discovery evasion persistence trojan upx

Malware Config

Signatures

Adds policy Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	b90881253b8f09257ea24dc20a27549ce7887683addc800dc6c7eea5d9d7e171.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\NVLE = "C:\\Windows\\SysWOW64\\mtxoci1.exe"	b90881253b8f09257ea24dc20a27549ce7887683addc800dc6c7eea5d9d7e171.exe

Executes dropped EXE 1 IoCs

pid	Process
1376	mtxoci1.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1896-55-0x00000000004A0000-0x0000000000546000-memory.dmp	upx
behavioral1/memory/1896-59-0x00000000004A0000-0x0000000000546000-memory.dmp	upx
behavioral1/memory/1896-58-0x00000000004A0000-0x0000000000546000-memory.dmp	upx

Checks BIOS information in registry 2 TTPs 1 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	b90881253b8f09257ea24dc20a27549ce7887683addc800dc6c7eea5d9d7e171.exe

Deletes itself 1 IoCs

pid	Process
1968	cmd.exe

Loads dropped DLL 1 IoCs

pid	Process
1896	b90881253b8f09257ea24dc20a27549ce7887683addc800dc6c7eea5d9d7e171.exe

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	b90881253b8f09257ea24dc20a27549ce7887683addc800dc6c7eea5d9d7e171.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\mtxoci1.exe	b90881253b8f09257ea24dc20a27549ce7887683addc800dc6c7eea5d9d7e171.exe
File opened for modification	C:\Windows\SysWOW64\mtxoci1.exe	b90881253b8f09257ea24dc20a27549ce7887683addc800dc6c7eea5d9d7e171.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
1896	b90881253b8f09257ea24dc20a27549ce7887683addc800dc6c7eea5d9d7e171.exe
1896	b90881253b8f09257ea24dc20a27549ce7887683addc800dc6c7eea5d9d7e171.exe
1376	mtxoci1.exe
1376	mtxoci1.exe
1376	mtxoci1.exe
1376	mtxoci1.exe
1376	mtxoci1.exe
1376	mtxoci1.exe
1376	mtxoci1.exe
1376	mtxoci1.exe
1376	mtxoci1.exe
1376	mtxoci1.exe
1376	mtxoci1.exe
1376	mtxoci1.exe
1376	mtxoci1.exe
1376	mtxoci1.exe
1376	mtxoci1.exe
1376	mtxoci1.exe
1376	mtxoci1.exe
1376	mtxoci1.exe
1376	mtxoci1.exe
1376	mtxoci1.exe
1376	mtxoci1.exe
1376	mtxoci1.exe
1376	mtxoci1.exe
1376	mtxoci1.exe
1376	mtxoci1.exe
1376	mtxoci1.exe
1376	mtxoci1.exe
1376	mtxoci1.exe
1376	mtxoci1.exe
1376	mtxoci1.exe
1376	mtxoci1.exe
1376	mtxoci1.exe
1376	mtxoci1.exe
1376	mtxoci1.exe
1376	mtxoci1.exe
1376	mtxoci1.exe
1376	mtxoci1.exe
1376	mtxoci1.exe
1376	mtxoci1.exe
1376	mtxoci1.exe
1376	mtxoci1.exe
1376	mtxoci1.exe
1376	mtxoci1.exe
1376	mtxoci1.exe
1376	mtxoci1.exe
1376	mtxoci1.exe
1376	mtxoci1.exe
1376	mtxoci1.exe
1376	mtxoci1.exe
1376	mtxoci1.exe
1376	mtxoci1.exe
1376	mtxoci1.exe
1376	mtxoci1.exe
1376	mtxoci1.exe
1376	mtxoci1.exe
1376	mtxoci1.exe
1376	mtxoci1.exe
1376	mtxoci1.exe
1376	mtxoci1.exe
1376	mtxoci1.exe
1376	mtxoci1.exe
1376	mtxoci1.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1896	b90881253b8f09257ea24dc20a27549ce7887683addc800dc6c7eea5d9d7e171.exe
Token: SeDebugPrivilege	1376	mtxoci1.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1896 wrote to memory of 1376	1896	b90881253b8f09257ea24dc20a27549ce7887683addc800dc6c7eea5d9d7e171.exe	28
PID 1896 wrote to memory of 1376	1896	b90881253b8f09257ea24dc20a27549ce7887683addc800dc6c7eea5d9d7e171.exe	28
PID 1896 wrote to memory of 1376	1896	b90881253b8f09257ea24dc20a27549ce7887683addc800dc6c7eea5d9d7e171.exe	28
PID 1896 wrote to memory of 1376	1896	b90881253b8f09257ea24dc20a27549ce7887683addc800dc6c7eea5d9d7e171.exe	28
PID 1896 wrote to memory of 1968	1896	b90881253b8f09257ea24dc20a27549ce7887683addc800dc6c7eea5d9d7e171.exe	30
PID 1896 wrote to memory of 1968	1896	b90881253b8f09257ea24dc20a27549ce7887683addc800dc6c7eea5d9d7e171.exe	30
PID 1896 wrote to memory of 1968	1896	b90881253b8f09257ea24dc20a27549ce7887683addc800dc6c7eea5d9d7e171.exe	30
PID 1896 wrote to memory of 1968	1896	b90881253b8f09257ea24dc20a27549ce7887683addc800dc6c7eea5d9d7e171.exe	30

C:\Users\Admin\AppData\Local\Temp\b90881253b8f09257ea24dc20a27549ce7887683addc800dc6c7eea5d9d7e171.exe
"C:\Users\Admin\AppData\Local\Temp\b90881253b8f09257ea24dc20a27549ce7887683addc800dc6c7eea5d9d7e171.exe"
1⤵
- Adds policy Run key to start application
- Checks BIOS information in registry
- Loads dropped DLL
- Checks whether UAC is enabled
- Drops file in System32 directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1896
- C:\Windows\SysWOW64\mtxoci1.exe
  C:\Windows\SysWOW64\mtxoci1.exe
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1376
- C:\Windows\SysWOW64\cmd.exe
  /c C:\Users\Admin\AppData\Local\Temp\~unins3440.bat "C:\Users\Admin\AppData\Local\Temp\b90881253b8f09257ea24dc20a27549ce7887683addc800dc6c7eea5d9d7e171.exe"
  2⤵
  - Deletes itself
  PID:1968

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

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\~unins3440.bat

Filesize
49B

MD5
9e0a2f5ab30517809b95a1ff1dd98c53

SHA1
5c1eefdf10e67d1e9216e2e3f5e92352d583c9ce

SHA256
97ac9fee75a1f7b63b3115e9c4fb9dda80b1caba26d2fb51325670dee261fe32

SHA512
e959cc1fd48fb1cccf135a697924c775a3812bab211fc7f9b00c5a9d617261d84c5d6f7cb548774c1e8f46811b06ca39c5603d0e10cbcb7b805f9abbe49b9b42

Download Submit
C:\Windows\SysWOW64\mtxoci1.exe

Filesize
166KB

MD5
f25394061b04fb6aa43bb73c4a8270b2

SHA1
e2564f75793381702367d71181c96a878041e3bf

SHA256
19b273e8e421fa8b1eaa3e12f2c93cb8297881d40608f54ea5b25d76e733db58

SHA512
ec7c56fd5dea47e40e15c55f5dc0167783e9bfa396a943ff5945ae581586902a96697300ba48307102d15968893ac8d65aa9658b14854f3dc8c948c96eac9eeb

Download Submit
C:\Windows\SysWOW64\mtxoci1.exe

Filesize
166KB

MD5
f25394061b04fb6aa43bb73c4a8270b2

SHA1
e2564f75793381702367d71181c96a878041e3bf

SHA256
19b273e8e421fa8b1eaa3e12f2c93cb8297881d40608f54ea5b25d76e733db58

SHA512
ec7c56fd5dea47e40e15c55f5dc0167783e9bfa396a943ff5945ae581586902a96697300ba48307102d15968893ac8d65aa9658b14854f3dc8c948c96eac9eeb

Download Submit
\Windows\SysWOW64\mtxoci1.exe

Filesize
166KB

MD5
f25394061b04fb6aa43bb73c4a8270b2

SHA1
e2564f75793381702367d71181c96a878041e3bf

SHA256
19b273e8e421fa8b1eaa3e12f2c93cb8297881d40608f54ea5b25d76e733db58

SHA512
ec7c56fd5dea47e40e15c55f5dc0167783e9bfa396a943ff5945ae581586902a96697300ba48307102d15968893ac8d65aa9658b14854f3dc8c948c96eac9eeb

Download Submit
memory/1376-72-0x0000000074970000-0x0000000074F1B000-memory.dmp

Filesize
5.7MB

Download
memory/1376-70-0x0000000074970000-0x0000000074F1B000-memory.dmp

Filesize
5.7MB

Download
memory/1896-62-0x00000000004A1000-0x0000000000503000-memory.dmp

Filesize
392KB

Download
memory/1896-59-0x00000000004A0000-0x0000000000546000-memory.dmp

Filesize
664KB

Download
memory/1896-58-0x00000000004A0000-0x0000000000546000-memory.dmp

Filesize
664KB

Download
memory/1896-55-0x00000000004A0000-0x0000000000546000-memory.dmp

Filesize
664KB

Download
memory/1896-54-0x0000000076181000-0x0000000076183000-memory.dmp

Filesize
8KB

Download
memory/1896-60-0x0000000000230000-0x0000000000275000-memory.dmp

Filesize
276KB

Download
memory/1896-71-0x00000000004A1000-0x0000000000503000-memory.dmp

Filesize
392KB

Download
memory/1896-61-0x0000000000503000-0x0000000000545000-memory.dmp

Filesize
264KB

Download
memory/1896-73-0x00000000004A1000-0x0000000000503000-memory.dmp

Filesize
392KB

Download