Malware Analysis Report

2025-01-18 12:24

Sample ID 240828-sbkrhsvcll
Target Ii4XtPGi5n3AWmt.exe
SHA256 8c92b39496a1f938d9c16ad3e1a7948b48923fd028e23a422c5bf8f0b7e1138b
Tags
formbook d16h discovery rat spyware stealer trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

8c92b39496a1f938d9c16ad3e1a7948b48923fd028e23a422c5bf8f0b7e1138b

Threat Level: Known bad

The file Ii4XtPGi5n3AWmt.exe was found to be: Known bad.

Malicious Activity Summary

formbook d16h discovery rat spyware stealer trojan

Formbook

Formbook payload

Deletes itself

Suspicious use of SetThreadContext

Unsigned PE

System Location Discovery: System Language Discovery

Suspicious behavior: MapViewOfSection

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

Modifies registry class

Suspicious use of UnmapMainImage

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-08-28 14:57

Signatures

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-08-28 14:57

Reported

2024-08-28 14:59

Platform

win7-20240708-en

Max time kernel

148s

Max time network

120s

Command Line

C:\Windows\Explorer.EXE

Signatures

Formbook

trojan spyware stealer formbook

Formbook payload

rat
Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A

Deletes itself

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\cmd.exe N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 2980 set thread context of 2292 N/A C:\Users\Admin\AppData\Local\Temp\Ii4XtPGi5n3AWmt.exe C:\Users\Admin\AppData\Local\Temp\Ii4XtPGi5n3AWmt.exe
PID 2292 set thread context of 1200 N/A C:\Users\Admin\AppData\Local\Temp\Ii4XtPGi5n3AWmt.exe C:\Windows\Explorer.EXE
PID 2696 set thread context of 1200 N/A C:\Windows\SysWOW64\cmmon32.exe C:\Windows\Explorer.EXE

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\Ii4XtPGi5n3AWmt.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\cmmon32.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\cmd.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Ii4XtPGi5n3AWmt.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\cmmon32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2980 wrote to memory of 2292 N/A C:\Users\Admin\AppData\Local\Temp\Ii4XtPGi5n3AWmt.exe C:\Users\Admin\AppData\Local\Temp\Ii4XtPGi5n3AWmt.exe
PID 2980 wrote to memory of 2292 N/A C:\Users\Admin\AppData\Local\Temp\Ii4XtPGi5n3AWmt.exe C:\Users\Admin\AppData\Local\Temp\Ii4XtPGi5n3AWmt.exe
PID 2980 wrote to memory of 2292 N/A C:\Users\Admin\AppData\Local\Temp\Ii4XtPGi5n3AWmt.exe C:\Users\Admin\AppData\Local\Temp\Ii4XtPGi5n3AWmt.exe
PID 2980 wrote to memory of 2292 N/A C:\Users\Admin\AppData\Local\Temp\Ii4XtPGi5n3AWmt.exe C:\Users\Admin\AppData\Local\Temp\Ii4XtPGi5n3AWmt.exe
PID 2980 wrote to memory of 2292 N/A C:\Users\Admin\AppData\Local\Temp\Ii4XtPGi5n3AWmt.exe C:\Users\Admin\AppData\Local\Temp\Ii4XtPGi5n3AWmt.exe
PID 2980 wrote to memory of 2292 N/A C:\Users\Admin\AppData\Local\Temp\Ii4XtPGi5n3AWmt.exe C:\Users\Admin\AppData\Local\Temp\Ii4XtPGi5n3AWmt.exe
PID 2980 wrote to memory of 2292 N/A C:\Users\Admin\AppData\Local\Temp\Ii4XtPGi5n3AWmt.exe C:\Users\Admin\AppData\Local\Temp\Ii4XtPGi5n3AWmt.exe
PID 1200 wrote to memory of 2696 N/A C:\Windows\Explorer.EXE C:\Windows\SysWOW64\cmmon32.exe
PID 1200 wrote to memory of 2696 N/A C:\Windows\Explorer.EXE C:\Windows\SysWOW64\cmmon32.exe
PID 1200 wrote to memory of 2696 N/A C:\Windows\Explorer.EXE C:\Windows\SysWOW64\cmmon32.exe
PID 1200 wrote to memory of 2696 N/A C:\Windows\Explorer.EXE C:\Windows\SysWOW64\cmmon32.exe
PID 2696 wrote to memory of 2464 N/A C:\Windows\SysWOW64\cmmon32.exe C:\Windows\SysWOW64\cmd.exe
PID 2696 wrote to memory of 2464 N/A C:\Windows\SysWOW64\cmmon32.exe C:\Windows\SysWOW64\cmd.exe
PID 2696 wrote to memory of 2464 N/A C:\Windows\SysWOW64\cmmon32.exe C:\Windows\SysWOW64\cmd.exe
PID 2696 wrote to memory of 2464 N/A C:\Windows\SysWOW64\cmmon32.exe C:\Windows\SysWOW64\cmd.exe

Processes

C:\Windows\Explorer.EXE

C:\Windows\Explorer.EXE

C:\Users\Admin\AppData\Local\Temp\Ii4XtPGi5n3AWmt.exe

"C:\Users\Admin\AppData\Local\Temp\Ii4XtPGi5n3AWmt.exe"

C:\Users\Admin\AppData\Local\Temp\Ii4XtPGi5n3AWmt.exe

"C:\Users\Admin\AppData\Local\Temp\Ii4XtPGi5n3AWmt.exe"

C:\Windows\SysWOW64\cmmon32.exe

"C:\Windows\SysWOW64\cmmon32.exe"

C:\Windows\SysWOW64\cmd.exe

/c del "C:\Users\Admin\AppData\Local\Temp\Ii4XtPGi5n3AWmt.exe"

Network

N/A

Files

memory/2980-0-0x000000007455E000-0x000000007455F000-memory.dmp

memory/2980-1-0x0000000001140000-0x00000000011F2000-memory.dmp

memory/2980-2-0x0000000074550000-0x0000000074C3E000-memory.dmp

memory/2980-3-0x00000000048D0000-0x0000000004974000-memory.dmp

memory/2980-4-0x0000000000580000-0x0000000000598000-memory.dmp

memory/2980-5-0x000000007455E000-0x000000007455F000-memory.dmp

memory/2980-6-0x0000000074550000-0x0000000074C3E000-memory.dmp

memory/2980-7-0x0000000005270000-0x00000000052E6000-memory.dmp

memory/2292-8-0x0000000000400000-0x000000000042F000-memory.dmp

memory/2292-10-0x0000000000400000-0x000000000042F000-memory.dmp

memory/2292-12-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/2292-15-0x0000000000400000-0x000000000042F000-memory.dmp

memory/2980-16-0x0000000074550000-0x0000000074C3E000-memory.dmp

memory/2292-17-0x0000000000A00000-0x0000000000D03000-memory.dmp

memory/2292-20-0x0000000000140000-0x0000000000154000-memory.dmp

memory/2292-19-0x0000000000400000-0x000000000042F000-memory.dmp

memory/1200-21-0x0000000006730000-0x00000000068CF000-memory.dmp

memory/2696-23-0x0000000000360000-0x000000000036D000-memory.dmp

memory/2696-22-0x0000000000360000-0x000000000036D000-memory.dmp

memory/2696-24-0x0000000000080000-0x00000000000AF000-memory.dmp

memory/1200-25-0x0000000006730000-0x00000000068CF000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-08-28 14:57

Reported

2024-08-28 14:59

Platform

win10v2004-20240802-en

Max time kernel

147s

Max time network

139s

Command Line

C:\Windows\Explorer.EXE

Signatures

Formbook

trojan spyware stealer formbook

Formbook payload

rat
Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 1636 set thread context of 3212 N/A C:\Users\Admin\AppData\Local\Temp\Ii4XtPGi5n3AWmt.exe C:\Users\Admin\AppData\Local\Temp\Ii4XtPGi5n3AWmt.exe
PID 3212 set thread context of 3420 N/A C:\Users\Admin\AppData\Local\Temp\Ii4XtPGi5n3AWmt.exe C:\Windows\Explorer.EXE
PID 3212 set thread context of 3420 N/A C:\Users\Admin\AppData\Local\Temp\Ii4XtPGi5n3AWmt.exe C:\Windows\Explorer.EXE
PID 3440 set thread context of 3420 N/A C:\Windows\SysWOW64\explorer.exe C:\Windows\Explorer.EXE

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\cmd.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\Ii4XtPGi5n3AWmt.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\explorer.exe N/A

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{4336a54d-038b-4685-ab02-99bb52d3fb8b}\Instance\ C:\Windows\Explorer.EXE N/A
Key created \REGISTRY\USER\S-1-5-21-355097885-2402257403-2971294179-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance\ C:\Windows\Explorer.EXE N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\Ii4XtPGi5n3AWmt.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\Ii4XtPGi5n3AWmt.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\Ii4XtPGi5n3AWmt.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\Ii4XtPGi5n3AWmt.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\Ii4XtPGi5n3AWmt.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\Ii4XtPGi5n3AWmt.exe N/A
N/A N/A C:\Windows\SysWOW64\explorer.exe N/A
N/A N/A C:\Windows\SysWOW64\explorer.exe N/A
N/A N/A C:\Windows\SysWOW64\explorer.exe N/A
N/A N/A C:\Windows\SysWOW64\explorer.exe N/A
N/A N/A C:\Windows\SysWOW64\explorer.exe N/A
N/A N/A C:\Windows\SysWOW64\explorer.exe N/A
N/A N/A C:\Windows\SysWOW64\explorer.exe N/A
N/A N/A C:\Windows\SysWOW64\explorer.exe N/A
N/A N/A C:\Windows\SysWOW64\explorer.exe N/A
N/A N/A C:\Windows\SysWOW64\explorer.exe N/A
N/A N/A C:\Windows\SysWOW64\explorer.exe N/A
N/A N/A C:\Windows\SysWOW64\explorer.exe N/A
N/A N/A C:\Windows\SysWOW64\explorer.exe N/A
N/A N/A C:\Windows\SysWOW64\explorer.exe N/A
N/A N/A C:\Windows\SysWOW64\explorer.exe N/A
N/A N/A C:\Windows\SysWOW64\explorer.exe N/A
N/A N/A C:\Windows\SysWOW64\explorer.exe N/A
N/A N/A C:\Windows\SysWOW64\explorer.exe N/A
N/A N/A C:\Windows\SysWOW64\explorer.exe N/A
N/A N/A C:\Windows\SysWOW64\explorer.exe N/A
N/A N/A C:\Windows\SysWOW64\explorer.exe N/A
N/A N/A C:\Windows\SysWOW64\explorer.exe N/A
N/A N/A C:\Windows\SysWOW64\explorer.exe N/A
N/A N/A C:\Windows\SysWOW64\explorer.exe N/A
N/A N/A C:\Windows\SysWOW64\explorer.exe N/A
N/A N/A C:\Windows\SysWOW64\explorer.exe N/A
N/A N/A C:\Windows\SysWOW64\explorer.exe N/A
N/A N/A C:\Windows\SysWOW64\explorer.exe N/A
N/A N/A C:\Windows\SysWOW64\explorer.exe N/A
N/A N/A C:\Windows\SysWOW64\explorer.exe N/A
N/A N/A C:\Windows\SysWOW64\explorer.exe N/A
N/A N/A C:\Windows\SysWOW64\explorer.exe N/A
N/A N/A C:\Windows\SysWOW64\explorer.exe N/A
N/A N/A C:\Windows\SysWOW64\explorer.exe N/A
N/A N/A C:\Windows\SysWOW64\explorer.exe N/A
N/A N/A C:\Windows\SysWOW64\explorer.exe N/A
N/A N/A C:\Windows\SysWOW64\explorer.exe N/A
N/A N/A C:\Windows\SysWOW64\explorer.exe N/A
N/A N/A C:\Windows\SysWOW64\explorer.exe N/A
N/A N/A C:\Windows\SysWOW64\explorer.exe N/A
N/A N/A C:\Windows\SysWOW64\explorer.exe N/A
N/A N/A C:\Windows\SysWOW64\explorer.exe N/A
N/A N/A C:\Windows\SysWOW64\explorer.exe N/A
N/A N/A C:\Windows\SysWOW64\explorer.exe N/A
N/A N/A C:\Windows\SysWOW64\explorer.exe N/A
N/A N/A C:\Windows\SysWOW64\explorer.exe N/A
N/A N/A C:\Windows\SysWOW64\explorer.exe N/A
N/A N/A C:\Windows\SysWOW64\explorer.exe N/A
N/A N/A C:\Windows\SysWOW64\explorer.exe N/A
N/A N/A C:\Windows\SysWOW64\explorer.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Ii4XtPGi5n3AWmt.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\explorer.exe N/A
Token: SeShutdownPrivilege N/A C:\Windows\Explorer.EXE N/A
Token: SeCreatePagefilePrivilege N/A C:\Windows\Explorer.EXE N/A
Token: SeShutdownPrivilege N/A C:\Windows\Explorer.EXE N/A
Token: SeCreatePagefilePrivilege N/A C:\Windows\Explorer.EXE N/A
Token: SeShutdownPrivilege N/A C:\Windows\Explorer.EXE N/A
Token: SeCreatePagefilePrivilege N/A C:\Windows\Explorer.EXE N/A
Token: SeShutdownPrivilege N/A C:\Windows\Explorer.EXE N/A
Token: SeCreatePagefilePrivilege N/A C:\Windows\Explorer.EXE N/A

Suspicious use of UnmapMainImage

Description Indicator Process Target
N/A N/A C:\Windows\Explorer.EXE N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1636 wrote to memory of 3212 N/A C:\Users\Admin\AppData\Local\Temp\Ii4XtPGi5n3AWmt.exe C:\Users\Admin\AppData\Local\Temp\Ii4XtPGi5n3AWmt.exe
PID 1636 wrote to memory of 3212 N/A C:\Users\Admin\AppData\Local\Temp\Ii4XtPGi5n3AWmt.exe C:\Users\Admin\AppData\Local\Temp\Ii4XtPGi5n3AWmt.exe
PID 1636 wrote to memory of 3212 N/A C:\Users\Admin\AppData\Local\Temp\Ii4XtPGi5n3AWmt.exe C:\Users\Admin\AppData\Local\Temp\Ii4XtPGi5n3AWmt.exe
PID 1636 wrote to memory of 3212 N/A C:\Users\Admin\AppData\Local\Temp\Ii4XtPGi5n3AWmt.exe C:\Users\Admin\AppData\Local\Temp\Ii4XtPGi5n3AWmt.exe
PID 1636 wrote to memory of 3212 N/A C:\Users\Admin\AppData\Local\Temp\Ii4XtPGi5n3AWmt.exe C:\Users\Admin\AppData\Local\Temp\Ii4XtPGi5n3AWmt.exe
PID 1636 wrote to memory of 3212 N/A C:\Users\Admin\AppData\Local\Temp\Ii4XtPGi5n3AWmt.exe C:\Users\Admin\AppData\Local\Temp\Ii4XtPGi5n3AWmt.exe
PID 3420 wrote to memory of 3440 N/A C:\Windows\Explorer.EXE C:\Windows\SysWOW64\explorer.exe
PID 3420 wrote to memory of 3440 N/A C:\Windows\Explorer.EXE C:\Windows\SysWOW64\explorer.exe
PID 3420 wrote to memory of 3440 N/A C:\Windows\Explorer.EXE C:\Windows\SysWOW64\explorer.exe
PID 3440 wrote to memory of 1068 N/A C:\Windows\SysWOW64\explorer.exe C:\Windows\SysWOW64\cmd.exe
PID 3440 wrote to memory of 1068 N/A C:\Windows\SysWOW64\explorer.exe C:\Windows\SysWOW64\cmd.exe
PID 3440 wrote to memory of 1068 N/A C:\Windows\SysWOW64\explorer.exe C:\Windows\SysWOW64\cmd.exe

Processes

C:\Windows\Explorer.EXE

C:\Windows\Explorer.EXE

C:\Users\Admin\AppData\Local\Temp\Ii4XtPGi5n3AWmt.exe

"C:\Users\Admin\AppData\Local\Temp\Ii4XtPGi5n3AWmt.exe"

C:\Users\Admin\AppData\Local\Temp\Ii4XtPGi5n3AWmt.exe

"C:\Users\Admin\AppData\Local\Temp\Ii4XtPGi5n3AWmt.exe"

C:\Windows\SysWOW64\explorer.exe

"C:\Windows\SysWOW64\explorer.exe"

C:\Windows\SysWOW64\cmd.exe

/c del "C:\Users\Admin\AppData\Local\Temp\Ii4XtPGi5n3AWmt.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 150.171.27.10:443 g.bing.com tcp
US 8.8.8.8:53 58.55.71.13.in-addr.arpa udp
US 8.8.8.8:53 81.144.22.2.in-addr.arpa udp
US 8.8.8.8:53 74.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 10.27.171.150.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 www.inematography-course-72246.bond udp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
US 8.8.8.8:53 www.ichunyang.club udp
US 8.8.8.8:53 www.etirement-plans-76931.bond udp
US 8.8.8.8:53 21.236.111.52.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 205.47.74.20.in-addr.arpa udp
US 8.8.8.8:53 www.ookmouse.fun udp

Files

memory/1636-0-0x00000000752EE000-0x00000000752EF000-memory.dmp

memory/1636-1-0x0000000000DC0000-0x0000000000E72000-memory.dmp

memory/1636-2-0x0000000005F20000-0x00000000064C4000-memory.dmp

memory/1636-3-0x0000000005840000-0x00000000058D2000-memory.dmp

memory/1636-4-0x00000000752E0000-0x0000000075A90000-memory.dmp

memory/1636-5-0x0000000005900000-0x000000000590A000-memory.dmp

memory/1636-6-0x0000000006F40000-0x0000000006FE4000-memory.dmp

memory/1636-7-0x0000000005E90000-0x0000000005EA8000-memory.dmp

memory/1636-8-0x00000000752EE000-0x00000000752EF000-memory.dmp

memory/1636-9-0x00000000752E0000-0x0000000075A90000-memory.dmp

memory/1636-10-0x0000000006AD0000-0x0000000006B46000-memory.dmp

memory/1636-11-0x0000000009350000-0x00000000093EC000-memory.dmp

memory/3212-12-0x0000000000400000-0x000000000042F000-memory.dmp

memory/1636-14-0x00000000752E0000-0x0000000075A90000-memory.dmp

memory/3212-15-0x0000000000F40000-0x000000000128A000-memory.dmp

memory/3212-18-0x0000000000ED0000-0x0000000000EE4000-memory.dmp

memory/3212-17-0x0000000000400000-0x000000000042F000-memory.dmp

memory/3420-19-0x0000000007E10000-0x0000000007F15000-memory.dmp

memory/3420-23-0x0000000008290000-0x0000000008399000-memory.dmp

memory/3212-22-0x0000000001290000-0x00000000012A4000-memory.dmp

memory/3212-21-0x0000000000400000-0x000000000042F000-memory.dmp

memory/3420-24-0x0000000007E10000-0x0000000007F15000-memory.dmp

memory/3440-26-0x0000000000330000-0x0000000000763000-memory.dmp

memory/3440-27-0x0000000000330000-0x0000000000763000-memory.dmp

memory/3440-28-0x0000000000A70000-0x0000000000A9F000-memory.dmp

memory/3420-29-0x0000000008290000-0x0000000008399000-memory.dmp

memory/3420-32-0x00000000083A0000-0x00000000084BF000-memory.dmp

memory/3420-34-0x00000000083A0000-0x00000000084BF000-memory.dmp

memory/3420-35-0x00000000083A0000-0x00000000084BF000-memory.dmp