formbook | 195f8028bfd632ee22ff9c3e25de3b118f0847fb21fbe91ba722ecbbfa5f2869

General

Target

PROFORMA INVOICE210505133444.xlsx
Size

804KB
MD5

f1564a3a6e6a3227169d136c2652eaf2
SHA1

6c17ecc0377cf31207087f53cf4228ed98939d3e
SHA256

195f8028bfd632ee22ff9c3e25de3b118f0847fb21fbe91ba722ecbbfa5f2869
SHA512

fedfd51564d0f06cc20e068726c6154f1aa380b4c182ab7a423d9ec3690aa13199cc77573cab010b3d61c389ed52470bd6a565a32723cadf2ed1fdad71456522

Score

10^/10

formbook rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

C2

http://www.projectx-dev.net/hci/

Decoy

0357shop.com

cinargenerator.com

freshwes.com

dance-pods.com

cptinsano.com

animaltales1.com

ridernationusa.com

christophergagnon.com

bzjp.icu

culturefap.com

illustrationtees.com

handwritingwork.com

thebullrunranch.com

wujingli.com

wifihouten.online

okavagegroup.com

makaladiggsfitness.com

ruvapy.com

customergirl.com

guangzhoushujukuzxtftf.com

Signatures

Formbook
Formbook is a data stealing malware which is capable of stealing data.
trojan spyware stealer formbook

Formbook Payload 3 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/328-75-0x0000000000400000-0x000000000042E000-memory.dmp	formbook
behavioral1/memory/328-76-0x000000000041EB90-mapping.dmp	formbook
behavioral1/memory/364-84-0x0000000000080000-0x00000000000AE000-memory.dmp	formbook

Blocklisted process makes network request 1 IoCs

Processes:

EQNEDT32.EXE

flow pid process

6 1988 EQNEDT32.EXE
Downloads MZ/PE file
Executes dropped EXE 2 IoCs

Processes:

name.exename.exe

pid process

1160 name.exe
328 name.exe
Loads dropped DLL 1 IoCs

Processes:

cmd.exe

pid process

996 cmd.exe

flow	pid	process
6	1988	EQNEDT32.EXE

pid	process
1160	name.exe
328	name.exe

pid	process
996	cmd.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

name.exename.exewininit.exe

description	pid	process	target process
PID 1160 set thread context of 328	1160	name.exe	name.exe
PID 328 set thread context of 1220	328	name.exe	Explorer.EXE
PID 364 set thread context of 1220	364	wininit.exe	Explorer.EXE

Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry
T1012

System Information Discovery
T1082

Processes:

EXCEL.EXE

description ioc process

Key opened \REGISTRY\MACHINE\Hardware\Description\System\FloatingPointProcessor EXCEL.EXE
Launches Equation Editor 1 TTPs 1 IoCs
Equation Editor is an old Office component often targeted by exploits such as CVE-2017-11882.
exploit

Exploitation for Client Execution
T1203

Processes:

EQNEDT32.EXE

pid process

1988 EQNEDT32.EXE

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\FloatingPointProcessor	EXCEL.EXE

pid	process
1988	EQNEDT32.EXE

Modifies Internet Explorer settings 1 TTPs 9 IoCs

adware spyware

Modify Registry

T1112

Processes:

EXCEL.EXE

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\Toolbar	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes"	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\ONBttnIE.dll/105"	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\EXCEL.EXE/3000"	EXCEL.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\Contexts = "1"	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\MenuExt	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote	EXCEL.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\Contexts = "55"	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

1652 EXCEL.EXE
Suspicious behavior: EnumeratesProcesses 7 IoCs

Processes:

name.exewininit.exe

pid process

328 name.exe
328 name.exe
364 wininit.exe
364 wininit.exe
364 wininit.exe
364 wininit.exe
364 wininit.exe
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

1220 Explorer.EXE
Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

name.exewininit.exe

pid process

328 name.exe
328 name.exe
328 name.exe
364 wininit.exe
364 wininit.exe

pid	process
1652	EXCEL.EXE

pid	process
328	name.exe
328	name.exe
364	wininit.exe
364	wininit.exe
364	wininit.exe
364	wininit.exe
364	wininit.exe

pid	process
1220	Explorer.EXE

pid	process
328	name.exe
328	name.exe
328	name.exe
364	wininit.exe
364	wininit.exe

Suspicious use of AdjustPrivilegeToken 9 IoCs

Processes:

name.exeExplorer.EXEwininit.exe

description	pid	process
Token: SeDebugPrivilege	328	name.exe
Token: SeShutdownPrivilege	1220	Explorer.EXE
Token: SeShutdownPrivilege	1220	Explorer.EXE
Token: SeDebugPrivilege	364	wininit.exe
Token: SeShutdownPrivilege	1220	Explorer.EXE
Token: SeShutdownPrivilege	1220	Explorer.EXE
Token: SeShutdownPrivilege	1220	Explorer.EXE
Token: SeShutdownPrivilege	1220	Explorer.EXE
Token: SeShutdownPrivilege	1220	Explorer.EXE

Suspicious use of FindShellTrayWindow 4 IoCs

Processes:

EXCEL.EXEExplorer.EXE

pid process

1652 EXCEL.EXE
1652 EXCEL.EXE
1220 Explorer.EXE
1220 Explorer.EXE
Suspicious use of SendNotifyMessage 2 IoCs

Processes:

Explorer.EXE

pid process

1220 Explorer.EXE
1220 Explorer.EXE
Suspicious use of SetWindowsHookEx 6 IoCs

Processes:

EXCEL.EXE

pid process

1652 EXCEL.EXE
1652 EXCEL.EXE
1652 EXCEL.EXE
1652 EXCEL.EXE
1652 EXCEL.EXE
1652 EXCEL.EXE

pid	process
1652	EXCEL.EXE
1652	EXCEL.EXE
1220	Explorer.EXE
1220	Explorer.EXE

pid	process
1220	Explorer.EXE
1220	Explorer.EXE

pid	process
1652	EXCEL.EXE
1652	EXCEL.EXE
1652	EXCEL.EXE
1652	EXCEL.EXE
1652	EXCEL.EXE
1652	EXCEL.EXE

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

EQNEDT32.EXEcmd.exename.exeExplorer.EXEwininit.exe

description	pid	process	target process
PID 1988 wrote to memory of 996	1988	EQNEDT32.EXE	cmd.exe
PID 1988 wrote to memory of 996	1988	EQNEDT32.EXE	cmd.exe
PID 1988 wrote to memory of 996	1988	EQNEDT32.EXE	cmd.exe
PID 1988 wrote to memory of 996	1988	EQNEDT32.EXE	cmd.exe
PID 996 wrote to memory of 1160	996	cmd.exe	name.exe
PID 996 wrote to memory of 1160	996	cmd.exe	name.exe
PID 996 wrote to memory of 1160	996	cmd.exe	name.exe
PID 996 wrote to memory of 1160	996	cmd.exe	name.exe
PID 1160 wrote to memory of 328	1160	name.exe	name.exe
PID 1160 wrote to memory of 328	1160	name.exe	name.exe
PID 1160 wrote to memory of 328	1160	name.exe	name.exe
PID 1160 wrote to memory of 328	1160	name.exe	name.exe
PID 1160 wrote to memory of 328	1160	name.exe	name.exe
PID 1160 wrote to memory of 328	1160	name.exe	name.exe
PID 1160 wrote to memory of 328	1160	name.exe	name.exe
PID 1220 wrote to memory of 364	1220	Explorer.EXE	wininit.exe
PID 1220 wrote to memory of 364	1220	Explorer.EXE	wininit.exe
PID 1220 wrote to memory of 364	1220	Explorer.EXE	wininit.exe
PID 1220 wrote to memory of 364	1220	Explorer.EXE	wininit.exe
PID 364 wrote to memory of 952	364	wininit.exe	cmd.exe
PID 364 wrote to memory of 952	364	wininit.exe	cmd.exe
PID 364 wrote to memory of 952	364	wininit.exe	cmd.exe
PID 364 wrote to memory of 952	364	wininit.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1220
- C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE
  "C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE" /dde "C:\Users\Admin\AppData\Local\Temp\PROFORMA INVOICE210505133444.xlsx"
  2⤵
  - Enumerates system info in registry
  - Modifies Internet Explorer settings
  - Suspicious behavior: AddClipboardFormatListener
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SetWindowsHookEx
  PID:1652
- C:\Windows\SysWOW64\wininit.exe
  "C:\Windows\SysWOW64\wininit.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:364
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Public\name.exe"
    3⤵
    PID:952

C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE
"C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE" -Embedding
1⤵
- Blocklisted process makes network request
- Launches Equation Editor
- Suspicious use of WriteProcessMemory
PID:1988
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c C:\Users\Public\name.exe
  2⤵
  - Loads dropped DLL
  - Suspicious use of WriteProcessMemory
  PID:996
- - C:\Users\Public\name.exe
    C:\Users\Public\name.exe
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:1160
  - - C:\Users\Public\name.exe
      "C:\Users\Public\name.exe"
      4⤵
      Executes dropped EXE
      Suspicious use of SetThreadContext
      Suspicious behavior: EnumeratesProcesses
      Suspicious behavior: MapViewOfSection
      Suspicious use of AdjustPrivilegeToken
      PID:328

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Exploitation for Client Execution

1

T1203

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Public\name.exe

MD5
0282fb6d3422cdebf88ba2d9ce0831af

SHA1
f0c80f1d6ace27df947df38aae7b11ed4b6d7144

SHA256
4fb3bfa3afd4fd027aff55a6cbbc8c3d92fb5dd84bca9d88ff893928a41b9a0a

SHA512
ab8df1a2b5feb03c0df351a215d6e9bb16c3b92853aab0fe7c96308fa94e1eefc362a23cff5e61da2a3e93f28e44a9954b23e363ff6dbc72ac90da95c5f8e6de

Download Submit
C:\Users\Public\name.exe

MD5
0282fb6d3422cdebf88ba2d9ce0831af

SHA1
f0c80f1d6ace27df947df38aae7b11ed4b6d7144

SHA256
4fb3bfa3afd4fd027aff55a6cbbc8c3d92fb5dd84bca9d88ff893928a41b9a0a

SHA512
ab8df1a2b5feb03c0df351a215d6e9bb16c3b92853aab0fe7c96308fa94e1eefc362a23cff5e61da2a3e93f28e44a9954b23e363ff6dbc72ac90da95c5f8e6de

Download Submit
C:\Users\Public\name.exe

MD5
0282fb6d3422cdebf88ba2d9ce0831af

SHA1
f0c80f1d6ace27df947df38aae7b11ed4b6d7144

SHA256
4fb3bfa3afd4fd027aff55a6cbbc8c3d92fb5dd84bca9d88ff893928a41b9a0a

SHA512
ab8df1a2b5feb03c0df351a215d6e9bb16c3b92853aab0fe7c96308fa94e1eefc362a23cff5e61da2a3e93f28e44a9954b23e363ff6dbc72ac90da95c5f8e6de

Download Submit
\Users\Public\name.exe

MD5
0282fb6d3422cdebf88ba2d9ce0831af

SHA1
f0c80f1d6ace27df947df38aae7b11ed4b6d7144

SHA256
4fb3bfa3afd4fd027aff55a6cbbc8c3d92fb5dd84bca9d88ff893928a41b9a0a

SHA512
ab8df1a2b5feb03c0df351a215d6e9bb16c3b92853aab0fe7c96308fa94e1eefc362a23cff5e61da2a3e93f28e44a9954b23e363ff6dbc72ac90da95c5f8e6de

Download Submit
memory/328-81-0x0000000000180000-0x0000000000194000-memory.dmp

Filesize
80KB

Download
memory/328-79-0x0000000000A50000-0x0000000000D53000-memory.dmp

Filesize
3.0MB

Download
memory/328-76-0x000000000041EB90-mapping.dmp

Download
memory/328-75-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/364-83-0x0000000000720000-0x000000000073A000-memory.dmp

Filesize
104KB

Download
memory/364-84-0x0000000000080000-0x00000000000AE000-memory.dmp

Filesize
184KB

Download
memory/364-86-0x0000000001FB0000-0x00000000022B3000-memory.dmp

Filesize
3.0MB

Download
memory/364-82-0x0000000000000000-mapping.dmp

Download
memory/364-88-0x0000000001E20000-0x0000000001EB3000-memory.dmp

Filesize
588KB

Download
memory/952-85-0x0000000000000000-mapping.dmp

Download
memory/996-64-0x0000000000000000-mapping.dmp

Download
memory/1160-73-0x0000000005180000-0x0000000005233000-memory.dmp

Filesize
716KB

Download
memory/1160-69-0x0000000000220000-0x0000000000221000-memory.dmp

Filesize
4KB

Download
memory/1160-67-0x0000000000000000-mapping.dmp

Download
memory/1160-74-0x0000000004410000-0x000000000447D000-memory.dmp

Filesize
436KB

Download
memory/1160-72-0x0000000000210000-0x000000000021E000-memory.dmp

Filesize
56KB

Download
memory/1160-71-0x0000000004D60000-0x0000000004D61000-memory.dmp

Filesize
4KB

Download
memory/1220-89-0x0000000004190000-0x0000000004248000-memory.dmp

Filesize
736KB

Download
memory/1220-80-0x0000000003AE0000-0x0000000003C42000-memory.dmp

Filesize
1.4MB

Download
memory/1652-62-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/1652-60-0x000000002FEA1000-0x000000002FEA4000-memory.dmp

Filesize
12KB

Download
memory/1652-87-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/1652-61-0x0000000070F81000-0x0000000070F83000-memory.dmp

Filesize
8KB

Download
memory/1988-63-0x00000000754F1000-0x00000000754F3000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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