formbook | 37d7aa935abf410814d084177c16b5a7a6353e18ef72749187bd1b5bb343da9d

General

Target

Inquiry 05042021.doc
Size

374KB
MD5

e9260ff7bb6e35d8fa72e725c017b6bd
SHA1

78f98dfacba3e97edc359934ed96733c28ae9ecb
SHA256

37d7aa935abf410814d084177c16b5a7a6353e18ef72749187bd1b5bb343da9d
SHA512

08c3fc0e6f6b7d3e6d3a811ec3e31b749acd3c7f125a98030ba3672e12f4b1a51f018b9290172a8ab6aece9529844e40625c2184de326120213b786f6541655a

Score

10^/10

formbook rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

C2

http://www.shoprodeovegas.com/xcl/

Decoy

sewingtherose.com

thesmartshareholder.com

afasyah.com

marolamusic.com

lookupgeorgina.com

plataforyou.com

dijcan.com

pawtyparcels.com

interprediction.com

fairerfinancehackathon.net

thehmnshop.com

jocelynlopez.com

launcheffecthouston.com

joyeveryminute.com

spyforu.com

ronerasanjuan.com

gadgetsdesi.com

nmrconsultants.com

travellpod.com

ballparksportscards.com

Signatures

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

Formbook Payload 2 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/596-73-0x0000000000400000-0x000000000042E000-memory.dmp	formbook
behavioral1/memory/1780-80-0x0000000000090000-0x00000000000BE000-memory.dmp	formbook

Blocklisted process makes network request 1 IoCs

Processes:

EQNEDT32.EXE

flow pid process

6 1752 EQNEDT32.EXE
Downloads MZ/PE file
Executes dropped EXE 2 IoCs

Processes:

propser163924.exepropser163924.exe

pid process

468 propser163924.exe
596 propser163924.exe
Loads dropped DLL 2 IoCs

Processes:

EQNEDT32.EXEpropser163924.exe

pid process

1752 EQNEDT32.EXE
468 propser163924.exe

flow	pid	process
6	1752	EQNEDT32.EXE

pid	process
468	propser163924.exe
596	propser163924.exe

pid	process
1752	EQNEDT32.EXE
468	propser163924.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

propser163924.exepropser163924.exemsiexec.exe

description	pid	process	target process
PID 468 set thread context of 596	468	propser163924.exe	propser163924.exe
PID 596 set thread context of 1272	596	propser163924.exe	Explorer.EXE
PID 1780 set thread context of 1272	1780	msiexec.exe	Explorer.EXE

Drops file in Windows directory 1 IoCs

Processes:

WINWORD.EXE

description ioc process

File opened for modification C:\Windows\Debug\WIA\wiatrace.log WINWORD.EXE
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

description	ioc	process
File opened for modification	C:\Windows\Debug\WIA\wiatrace.log	WINWORD.EXE

NSIS installer 8 IoCs

installer

Processes:

resource	yara_rule
\Users\Admin\AppData\Roaming\propser163924.exe	nsis_installer_1
\Users\Admin\AppData\Roaming\propser163924.exe	nsis_installer_2
C:\Users\Admin\AppData\Roaming\propser163924.exe	nsis_installer_1
C:\Users\Admin\AppData\Roaming\propser163924.exe	nsis_installer_2
C:\Users\Admin\AppData\Roaming\propser163924.exe	nsis_installer_1
C:\Users\Admin\AppData\Roaming\propser163924.exe	nsis_installer_2
C:\Users\Admin\AppData\Roaming\propser163924.exe	nsis_installer_1
C:\Users\Admin\AppData\Roaming\propser163924.exe	nsis_installer_2

Office loads VBA resources, possible macro or embedded object present
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

1752 EQNEDT32.EXE

pid	process
1752	EQNEDT32.EXE

Modifies Internet Explorer settings 1 TTPs 9 IoCs

adware spyware

Modify Registry

T1112

Processes:

WINWORD.EXE

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\EXCEL.EXE/3000"	WINWORD.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\Contexts = "1"	WINWORD.EXE
Key created	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\Toolbar	WINWORD.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes"	WINWORD.EXE
Key created	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt	WINWORD.EXE
Key created	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote	WINWORD.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\Contexts = "55"	WINWORD.EXE
Key created	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel	WINWORD.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\ONBttnIE.dll/105"	WINWORD.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

WINWORD.EXE

pid process

2020 WINWORD.EXE

pid	process
2020	WINWORD.EXE

Suspicious behavior: EnumeratesProcesses 29 IoCs

Processes:

propser163924.exemsiexec.exe

pid	process
596	propser163924.exe
596	propser163924.exe
1780	msiexec.exe
1780	msiexec.exe
1780	msiexec.exe
1780	msiexec.exe
1780	msiexec.exe
1780	msiexec.exe
1780	msiexec.exe
1780	msiexec.exe
1780	msiexec.exe
1780	msiexec.exe
1780	msiexec.exe
1780	msiexec.exe
1780	msiexec.exe
1780	msiexec.exe
1780	msiexec.exe
1780	msiexec.exe
1780	msiexec.exe
1780	msiexec.exe
1780	msiexec.exe
1780	msiexec.exe
1780	msiexec.exe
1780	msiexec.exe
1780	msiexec.exe
1780	msiexec.exe
1780	msiexec.exe
1780	msiexec.exe
1780	msiexec.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

1272 Explorer.EXE
Suspicious behavior: MapViewOfSection 6 IoCs

Processes:

propser163924.exepropser163924.exemsiexec.exe

pid process

468 propser163924.exe
596 propser163924.exe
596 propser163924.exe
596 propser163924.exe
1780 msiexec.exe
1780 msiexec.exe

pid	process
1272	Explorer.EXE

pid	process
468	propser163924.exe
596	propser163924.exe
596	propser163924.exe
596	propser163924.exe
1780	msiexec.exe
1780	msiexec.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

Processes:

propser163924.exemsiexec.exeExplorer.EXE

description	pid	process
Token: SeDebugPrivilege	596	propser163924.exe
Token: SeDebugPrivilege	1780	msiexec.exe
Token: SeShutdownPrivilege	1272	Explorer.EXE
Token: SeShutdownPrivilege	1272	Explorer.EXE
Token: SeShutdownPrivilege	1272	Explorer.EXE

Suspicious use of FindShellTrayWindow 6 IoCs

Processes:

Explorer.EXE

pid process

1272 Explorer.EXE
1272 Explorer.EXE
1272 Explorer.EXE
1272 Explorer.EXE
1272 Explorer.EXE
1272 Explorer.EXE
Suspicious use of SendNotifyMessage 4 IoCs

Processes:

Explorer.EXE

pid process

1272 Explorer.EXE
1272 Explorer.EXE
1272 Explorer.EXE
1272 Explorer.EXE
Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

WINWORD.EXE

pid process

2020 WINWORD.EXE
2020 WINWORD.EXE

pid	process
1272	Explorer.EXE
1272	Explorer.EXE
1272	Explorer.EXE
1272	Explorer.EXE
1272	Explorer.EXE
1272	Explorer.EXE

pid	process
1272	Explorer.EXE
1272	Explorer.EXE
1272	Explorer.EXE
1272	Explorer.EXE

pid	process
2020	WINWORD.EXE
2020	WINWORD.EXE

Suspicious use of WriteProcessMemory 24 IoCs

Processes:

EQNEDT32.EXEpropser163924.exeExplorer.EXEmsiexec.exeWINWORD.EXE

description	pid	process	target process
PID 1752 wrote to memory of 468	1752	EQNEDT32.EXE	propser163924.exe
PID 1752 wrote to memory of 468	1752	EQNEDT32.EXE	propser163924.exe
PID 1752 wrote to memory of 468	1752	EQNEDT32.EXE	propser163924.exe
PID 1752 wrote to memory of 468	1752	EQNEDT32.EXE	propser163924.exe
PID 468 wrote to memory of 596	468	propser163924.exe	propser163924.exe
PID 468 wrote to memory of 596	468	propser163924.exe	propser163924.exe
PID 468 wrote to memory of 596	468	propser163924.exe	propser163924.exe
PID 468 wrote to memory of 596	468	propser163924.exe	propser163924.exe
PID 468 wrote to memory of 596	468	propser163924.exe	propser163924.exe
PID 1272 wrote to memory of 1780	1272	Explorer.EXE	msiexec.exe
PID 1272 wrote to memory of 1780	1272	Explorer.EXE	msiexec.exe
PID 1272 wrote to memory of 1780	1272	Explorer.EXE	msiexec.exe
PID 1272 wrote to memory of 1780	1272	Explorer.EXE	msiexec.exe
PID 1272 wrote to memory of 1780	1272	Explorer.EXE	msiexec.exe
PID 1272 wrote to memory of 1780	1272	Explorer.EXE	msiexec.exe
PID 1272 wrote to memory of 1780	1272	Explorer.EXE	msiexec.exe
PID 1780 wrote to memory of 1680	1780	msiexec.exe	cmd.exe
PID 1780 wrote to memory of 1680	1780	msiexec.exe	cmd.exe
PID 1780 wrote to memory of 1680	1780	msiexec.exe	cmd.exe
PID 1780 wrote to memory of 1680	1780	msiexec.exe	cmd.exe
PID 2020 wrote to memory of 1824	2020	WINWORD.EXE	splwow64.exe
PID 2020 wrote to memory of 1824	2020	WINWORD.EXE	splwow64.exe
PID 2020 wrote to memory of 1824	2020	WINWORD.EXE	splwow64.exe
PID 2020 wrote to memory of 1824	2020	WINWORD.EXE	splwow64.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:1272

C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE
"C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\Inquiry 05042021.doc"
2⤵
- Drops file in Windows directory
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2020

C:\Windows\splwow64.exe
C:\Windows\splwow64.exe 12288
3⤵
PID:1824

C:\Windows\SysWOW64\msiexec.exe
"C:\Windows\SysWOW64\msiexec.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1780

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Roaming\propser163924.exe"
3⤵
PID:1680

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
- Loads dropped DLL
- Launches Equation Editor
- Suspicious use of WriteProcessMemory
PID:1752

C:\Users\Admin\AppData\Roaming\propser163924.exe
"C:\Users\Admin\AppData\Roaming\propser163924.exe"
2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:468

C:\Users\Admin\AppData\Roaming\propser163924.exe
"C:\Users\Admin\AppData\Roaming\propser163924.exe"
3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:596

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

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\propser163924.exe

MD5
aa6168d4e41ced2091baee9f5d59e11e

SHA1
de7f4a8270fe216e68076ce93243b60d6d6d5f51

SHA256
7c6393b4e86ea5cec49c0f814b17e4bb85aa447c19896037252a94ff6416ce1b

SHA512
37c5d51495c0b53bdcd522d3b4a0346202d6069002b8d35f913a96596eb1a51c4fa41e445673024fbb62b4f701355aabb2e1804075709693c6339d1c3dad95e2

Download Submit
C:\Users\Admin\AppData\Roaming\propser163924.exe

MD5
aa6168d4e41ced2091baee9f5d59e11e

SHA1
de7f4a8270fe216e68076ce93243b60d6d6d5f51

SHA256
7c6393b4e86ea5cec49c0f814b17e4bb85aa447c19896037252a94ff6416ce1b

SHA512
37c5d51495c0b53bdcd522d3b4a0346202d6069002b8d35f913a96596eb1a51c4fa41e445673024fbb62b4f701355aabb2e1804075709693c6339d1c3dad95e2

Download Submit
C:\Users\Admin\AppData\Roaming\propser163924.exe

MD5
aa6168d4e41ced2091baee9f5d59e11e

SHA1
de7f4a8270fe216e68076ce93243b60d6d6d5f51

SHA256
7c6393b4e86ea5cec49c0f814b17e4bb85aa447c19896037252a94ff6416ce1b

SHA512
37c5d51495c0b53bdcd522d3b4a0346202d6069002b8d35f913a96596eb1a51c4fa41e445673024fbb62b4f701355aabb2e1804075709693c6339d1c3dad95e2

Download Submit
\Users\Admin\AppData\Local\Temp\nsi4388.tmp\ghvea31n0uw.dll

MD5
7bee24f38e906d08f10c1b51be4be749

SHA1
588f2f0f8b859e15620fbec8e6381c6addf2a3fd

SHA256
974e158ea37951d137839d4189279330aa2e85f5bafa4f273f7007673cd4d3fc

SHA512
417032d0c0decacd4332d9379843ef358b553960a2c00caf470d129f6f797aed3eb180a3e2182eb5e443772d24b8e8c7fe4bd3b06909b2a555a8e7c063137e25

Download Submit
\Users\Admin\AppData\Roaming\propser163924.exe

MD5
aa6168d4e41ced2091baee9f5d59e11e

SHA1
de7f4a8270fe216e68076ce93243b60d6d6d5f51

SHA256
7c6393b4e86ea5cec49c0f814b17e4bb85aa447c19896037252a94ff6416ce1b

SHA512
37c5d51495c0b53bdcd522d3b4a0346202d6069002b8d35f913a96596eb1a51c4fa41e445673024fbb62b4f701355aabb2e1804075709693c6339d1c3dad95e2

Download Submit
memory/468-70-0x00000000004B0000-0x00000000004B2000-memory.dmp

Filesize
8KB

Download
memory/468-65-0x0000000000000000-mapping.dmp

Download
memory/596-73-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/596-71-0x000000000041EB70-mapping.dmp

Download
memory/596-75-0x00000000002C0000-0x00000000002D4000-memory.dmp

Filesize
80KB

Download
memory/596-74-0x00000000006E0000-0x00000000009E3000-memory.dmp

Filesize
3.0MB

Download
memory/1272-76-0x00000000062E0000-0x000000000646A000-memory.dmp

Filesize
1.5MB

Download
memory/1272-86-0x0000000006110000-0x0000000006225000-memory.dmp

Filesize
1.1MB

Download
memory/1680-82-0x0000000000000000-mapping.dmp

Download
memory/1752-63-0x0000000076281000-0x0000000076283000-memory.dmp

Filesize
8KB

Download
memory/1780-77-0x0000000000000000-mapping.dmp

Download
memory/1780-79-0x0000000000530000-0x0000000000544000-memory.dmp

Filesize
80KB

Download
memory/1780-80-0x0000000000090000-0x00000000000BE000-memory.dmp

Filesize
184KB

Download
memory/1780-81-0x0000000002360000-0x0000000002663000-memory.dmp

Filesize
3.0MB

Download
memory/1780-83-0x0000000000B80000-0x0000000000C13000-memory.dmp

Filesize
588KB

Download
memory/1824-84-0x0000000000000000-mapping.dmp

Download
memory/1824-85-0x000007FEFC141000-0x000007FEFC143000-memory.dmp

Filesize
8KB

Download
memory/2020-60-0x0000000072C41000-0x0000000072C44000-memory.dmp

Filesize
12KB

Download
memory/2020-61-0x00000000706C1000-0x00000000706C3000-memory.dmp

Filesize
8KB

Download
memory/2020-62-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/2020-87-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads