b921ad3673e52c1e1c0596f75fb8ccf0464bb98838f926f7c975a660188d95b3

Analysis

max time kernel
151s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
07/11/2022, 10:54

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

b921ad3673e52c1e1c0596f75fb8ccf0464bb98838f926f7c975a660188d95b3.exe
Size

313KB
MD5

20055c8671238163ca143a2929be39f6
SHA1

034b708b06429f36a7952d5e2929f87d6de9134c
SHA256

b921ad3673e52c1e1c0596f75fb8ccf0464bb98838f926f7c975a660188d95b3
SHA512

c8cde8c7153fc6f77b9ff70fc457cc9d2874d526d5a268df9fd6aac7e5c3c32d9358873c2d1c2dd595c0cb970a23b909345d9baa495404a2d43fa8ac855aa9aa
SSDEEP

6144:HpfHJ08j1FY6zj9KjkurnbQtqCg2hh/j6n8aJsdKPGL96eYyjKwpCDih9:ZHJN1FJpKjkuTUta23/Bae5UeYyADiH

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
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\Vhqr = "C:\\Windows\\SysWOW64\\formatv.exe"	b921ad3673e52c1e1c0596f75fb8ccf0464bb98838f926f7c975a660188d95b3.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	b921ad3673e52c1e1c0596f75fb8ccf0464bb98838f926f7c975a660188d95b3.exe

Executes dropped EXE 1 IoCs

pid	Process
3496	formatv.exe

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3760-132-0x0000000001610000-0x00000000016B1000-memory.dmp	upx
behavioral2/memory/3760-135-0x0000000001610000-0x00000000016B1000-memory.dmp	upx
behavioral2/memory/3760-136-0x0000000001610000-0x00000000016B1000-memory.dmp	upx
behavioral2/memory/3760-137-0x0000000001610000-0x0000000001710000-memory.dmp	upx
behavioral2/memory/3760-147-0x0000000001610000-0x0000000001710000-memory.dmp	upx
behavioral2/memory/3760-151-0x0000000001610000-0x00000000016B1000-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	b921ad3673e52c1e1c0596f75fb8ccf0464bb98838f926f7c975a660188d95b3.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	b921ad3673e52c1e1c0596f75fb8ccf0464bb98838f926f7c975a660188d95b3.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\formatv.exe	b921ad3673e52c1e1c0596f75fb8ccf0464bb98838f926f7c975a660188d95b3.exe
File opened for modification	C:\Windows\SysWOW64\formatv.exe	b921ad3673e52c1e1c0596f75fb8ccf0464bb98838f926f7c975a660188d95b3.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
3760	b921ad3673e52c1e1c0596f75fb8ccf0464bb98838f926f7c975a660188d95b3.exe
3760	b921ad3673e52c1e1c0596f75fb8ccf0464bb98838f926f7c975a660188d95b3.exe
3760	b921ad3673e52c1e1c0596f75fb8ccf0464bb98838f926f7c975a660188d95b3.exe
3760	b921ad3673e52c1e1c0596f75fb8ccf0464bb98838f926f7c975a660188d95b3.exe
3496	formatv.exe
3496	formatv.exe
3496	formatv.exe
3496	formatv.exe
3496	formatv.exe
3496	formatv.exe
3496	formatv.exe
3496	formatv.exe
3496	formatv.exe
3496	formatv.exe
3496	formatv.exe
3496	formatv.exe
3496	formatv.exe
3496	formatv.exe
3496	formatv.exe
3496	formatv.exe
3496	formatv.exe
3496	formatv.exe
3496	formatv.exe
3496	formatv.exe
3496	formatv.exe
3496	formatv.exe
3496	formatv.exe
3496	formatv.exe
3496	formatv.exe
3496	formatv.exe
3496	formatv.exe
3496	formatv.exe
3496	formatv.exe
3496	formatv.exe
3496	formatv.exe
3496	formatv.exe
3496	formatv.exe
3496	formatv.exe
3496	formatv.exe
3496	formatv.exe
3496	formatv.exe
3496	formatv.exe
3496	formatv.exe
3496	formatv.exe
3496	formatv.exe
3496	formatv.exe
3496	formatv.exe
3496	formatv.exe
3496	formatv.exe
3496	formatv.exe
3496	formatv.exe
3496	formatv.exe
3496	formatv.exe
3496	formatv.exe
3496	formatv.exe
3496	formatv.exe
3496	formatv.exe
3496	formatv.exe
3496	formatv.exe
3496	formatv.exe
3496	formatv.exe
3496	formatv.exe
3496	formatv.exe
3496	formatv.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3760	b921ad3673e52c1e1c0596f75fb8ccf0464bb98838f926f7c975a660188d95b3.exe
Token: SeDebugPrivilege	3496	formatv.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3760 wrote to memory of 3496	3760	b921ad3673e52c1e1c0596f75fb8ccf0464bb98838f926f7c975a660188d95b3.exe	79
PID 3760 wrote to memory of 3496	3760	b921ad3673e52c1e1c0596f75fb8ccf0464bb98838f926f7c975a660188d95b3.exe	79
PID 3760 wrote to memory of 3496	3760	b921ad3673e52c1e1c0596f75fb8ccf0464bb98838f926f7c975a660188d95b3.exe	79
PID 3760 wrote to memory of 1992	3760	b921ad3673e52c1e1c0596f75fb8ccf0464bb98838f926f7c975a660188d95b3.exe	81
PID 3760 wrote to memory of 1992	3760	b921ad3673e52c1e1c0596f75fb8ccf0464bb98838f926f7c975a660188d95b3.exe	81
PID 3760 wrote to memory of 1992	3760	b921ad3673e52c1e1c0596f75fb8ccf0464bb98838f926f7c975a660188d95b3.exe	81

C:\Users\Admin\AppData\Local\Temp\b921ad3673e52c1e1c0596f75fb8ccf0464bb98838f926f7c975a660188d95b3.exe
"C:\Users\Admin\AppData\Local\Temp\b921ad3673e52c1e1c0596f75fb8ccf0464bb98838f926f7c975a660188d95b3.exe"
1⤵
- Adds policy Run key to start application
- Checks BIOS information in registry
- Checks whether UAC is enabled
- Drops file in System32 directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3760
- C:\Windows\SysWOW64\formatv.exe
  C:\Windows\SysWOW64\formatv.exe
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3496
- C:\Windows\SysWOW64\cmd.exe
  /c C:\Users\Admin\AppData\Local\Temp\~unins5103.bat "C:\Users\Admin\AppData\Local\Temp\b921ad3673e52c1e1c0596f75fb8ccf0464bb98838f926f7c975a660188d95b3.exe"
  2⤵
  PID:1992

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

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\~unins5103.bat

Filesize
49B

MD5
9e0a2f5ab30517809b95a1ff1dd98c53

SHA1
5c1eefdf10e67d1e9216e2e3f5e92352d583c9ce

SHA256
97ac9fee75a1f7b63b3115e9c4fb9dda80b1caba26d2fb51325670dee261fe32

SHA512
e959cc1fd48fb1cccf135a697924c775a3812bab211fc7f9b00c5a9d617261d84c5d6f7cb548774c1e8f46811b06ca39c5603d0e10cbcb7b805f9abbe49b9b42

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

Filesize
138KB

MD5
f0cf06782f80bea2f34bfcf52a55787b

SHA1
2b94626ba068c456661af8bd6077b8352d76458b

SHA256
1215aef40e2009d956d1915e09352c70fbecf1fab6addd27e2193a9b8b422502

SHA512
ade8fea22857fd289aaf3e5d4ddc25427b3268310b85ec889a456418775c3d212974f620c25b803bd0e0ff3e233a80b658f64d016daf3e9cb8ca8b787c0f1336

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

Filesize
138KB

MD5
f0cf06782f80bea2f34bfcf52a55787b

SHA1
2b94626ba068c456661af8bd6077b8352d76458b

SHA256
1215aef40e2009d956d1915e09352c70fbecf1fab6addd27e2193a9b8b422502

SHA512
ade8fea22857fd289aaf3e5d4ddc25427b3268310b85ec889a456418775c3d212974f620c25b803bd0e0ff3e233a80b658f64d016daf3e9cb8ca8b787c0f1336

Download Submit
memory/3496-146-0x0000000073F20000-0x00000000744D1000-memory.dmp

Filesize
5.7MB

Download
memory/3496-150-0x0000000073F20000-0x00000000744D1000-memory.dmp

Filesize
5.7MB

Download
memory/3760-135-0x0000000001610000-0x00000000016B1000-memory.dmp

Filesize
644KB

Download
memory/3760-139-0x0000000001672000-0x00000000016B0000-memory.dmp

Filesize
248KB

Download
memory/3760-137-0x0000000001610000-0x0000000001710000-memory.dmp

Filesize
1024KB

Download
memory/3760-136-0x0000000001610000-0x00000000016B1000-memory.dmp

Filesize
644KB

Download
memory/3760-138-0x00000000001C0000-0x00000000001FE000-memory.dmp

Filesize
248KB

Download
memory/3760-132-0x0000000001610000-0x00000000016B1000-memory.dmp

Filesize
644KB

Download
memory/3760-147-0x0000000001610000-0x0000000001710000-memory.dmp

Filesize
1024KB

Download
memory/3760-148-0x00000000001C0000-0x00000000001FE000-memory.dmp

Filesize
248KB

Download
memory/3760-149-0x0000000001611000-0x0000000001672000-memory.dmp

Filesize
388KB

Download
memory/3760-140-0x0000000001611000-0x0000000001672000-memory.dmp

Filesize
388KB

Download
memory/3760-151-0x0000000001610000-0x00000000016B1000-memory.dmp

Filesize
644KB

Download
memory/3760-152-0x0000000001611000-0x0000000001672000-memory.dmp

Filesize
388KB

Download