formbook | 0a07a25107fbbaede9d4fd47e306e666fd8694535e4ca6da79d7e33569efb52e

General

Target

IMG_010357.doc
Size

784KB
MD5

802a08275e329d68836ba4d9afe7d9ab
SHA1

248f795f372cb4ed8ccd3385c976131e8b31598e
SHA256

0a07a25107fbbaede9d4fd47e306e666fd8694535e4ca6da79d7e33569efb52e
SHA512

4c81b299d081ee0ac28e0ac99989c0bbb7a20de3dc660a1f91ffd86ae785a3a98ce73a25c4f0ab304def3c514d3a893de82e71c05634ab874b51cd45f32b92ea

Score

10^/10

formbook rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

C2

http://www.vitajwb.com/irux/

Decoy

heteltht.com

transbordaquemultiplica.com

ispartakulecleaner.com

woodcutter.website

gy88api8888.com

forsagemagic.com

greenqobbler.com

piligame.com

pcbet333.com

superpuzzlegames.com

jameslearyrealestate.com

acmarketinghacks.com

world-travel.xyz

sprayfoampocatello.com

anshangbao.com

qacpilotacademy.com

aodaicali.com

aarusystems.com

potion-designs.com

bajaenvocho.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/1472-23-0x0000000000400000-0x000000000042E000-memory.dmp	formbook
behavioral1/memory/1472-24-0x000000000041ED00-mapping.dmp	formbook
behavioral1/memory/1120-36-0x00000000000C0000-0x00000000000EE000-memory.dmp	formbook

Blocklisted process makes network request 2 IoCs

Processes:

EQNEDT32.EXE

flow pid process

6 1352 EQNEDT32.EXE
8 1352 EQNEDT32.EXE
Executes dropped EXE 2 IoCs

Processes:

69577.exeAddInProcess32.exe

pid process

464 69577.exe
1472 AddInProcess32.exe
Loads dropped DLL 2 IoCs

Processes:

EQNEDT32.EXE69577.exe

pid process

1352 EQNEDT32.EXE
464 69577.exe

flow	pid	process
6	1352	EQNEDT32.EXE
8	1352	EQNEDT32.EXE

pid	process
1352	EQNEDT32.EXE
464	69577.exe

Suspicious use of SetThreadContext 4 IoCs

Processes:

69577.exeAddInProcess32.exesvchost.exe

description	pid	process	target process
PID 464 set thread context of 1472	464	69577.exe	AddInProcess32.exe
PID 1472 set thread context of 1268	1472	AddInProcess32.exe	Explorer.EXE
PID 1472 set thread context of 1268	1472	AddInProcess32.exe	Explorer.EXE
PID 1120 set thread context of 1268	1120	svchost.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
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

1352 EQNEDT32.EXE

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

pid	process
1352	EQNEDT32.EXE

Modifies Internet Explorer settings 1 TTPs 9 IoCs

adware spyware

Modify Registry

T1112

Processes:

WINWORD.EXE

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt	WINWORD.EXE
Key created	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote	WINWORD.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\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-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\Contexts = "1"	WINWORD.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes"	WINWORD.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\ONBttnIE.dll/105"	WINWORD.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\Contexts = "55"	WINWORD.EXE
Key created	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel	WINWORD.EXE
Key created	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\Toolbar	WINWORD.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

WINWORD.EXE

pid process

792 WINWORD.EXE

pid	process
792	WINWORD.EXE

Suspicious behavior: EnumeratesProcesses 30 IoCs

Processes:

69577.exeAddInProcess32.exesvchost.exe

pid	process
464	69577.exe
464	69577.exe
1472	AddInProcess32.exe
1472	AddInProcess32.exe
1472	AddInProcess32.exe
1120	svchost.exe
1120	svchost.exe
1120	svchost.exe
1120	svchost.exe
1120	svchost.exe
1120	svchost.exe
1120	svchost.exe
1120	svchost.exe
1120	svchost.exe
1120	svchost.exe
1120	svchost.exe
1120	svchost.exe
1120	svchost.exe
1120	svchost.exe
1120	svchost.exe
1120	svchost.exe
1120	svchost.exe
1120	svchost.exe
1120	svchost.exe
1120	svchost.exe
1120	svchost.exe
1120	svchost.exe
1120	svchost.exe
1120	svchost.exe
1120	svchost.exe

Suspicious behavior: MapViewOfSection 6 IoCs

Processes:

AddInProcess32.exesvchost.exe

pid process

1472 AddInProcess32.exe
1472 AddInProcess32.exe
1472 AddInProcess32.exe
1472 AddInProcess32.exe
1120 svchost.exe
1120 svchost.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

69577.exeAddInProcess32.exesvchost.exe

description pid process

Token: SeDebugPrivilege 464 69577.exe
Token: SeDebugPrivilege 1472 AddInProcess32.exe
Token: SeDebugPrivilege 1120 svchost.exe
Suspicious use of FindShellTrayWindow 4 IoCs

Processes:

Explorer.EXE

pid process

1268 Explorer.EXE
1268 Explorer.EXE
1268 Explorer.EXE
1268 Explorer.EXE
Suspicious use of SendNotifyMessage 4 IoCs

Processes:

Explorer.EXE

pid process

1268 Explorer.EXE
1268 Explorer.EXE
1268 Explorer.EXE
1268 Explorer.EXE
Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

WINWORD.EXE

pid process

792 WINWORD.EXE
792 WINWORD.EXE

pid	process
1472	AddInProcess32.exe
1472	AddInProcess32.exe
1472	AddInProcess32.exe
1472	AddInProcess32.exe
1120	svchost.exe
1120	svchost.exe

description	pid	process
Token: SeDebugPrivilege	464	69577.exe
Token: SeDebugPrivilege	1472	AddInProcess32.exe
Token: SeDebugPrivilege	1120	svchost.exe

pid	process
1268	Explorer.EXE
1268	Explorer.EXE
1268	Explorer.EXE
1268	Explorer.EXE

pid	process
1268	Explorer.EXE
1268	Explorer.EXE
1268	Explorer.EXE
1268	Explorer.EXE

pid	process
792	WINWORD.EXE
792	WINWORD.EXE

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

WINWORD.EXEEQNEDT32.EXE69577.exeExplorer.EXEsvchost.exe

description	pid	process	target process
PID 792 wrote to memory of 1812	792	WINWORD.EXE	splwow64.exe
PID 792 wrote to memory of 1812	792	WINWORD.EXE	splwow64.exe
PID 792 wrote to memory of 1812	792	WINWORD.EXE	splwow64.exe
PID 792 wrote to memory of 1812	792	WINWORD.EXE	splwow64.exe
PID 1352 wrote to memory of 464	1352	EQNEDT32.EXE	69577.exe
PID 1352 wrote to memory of 464	1352	EQNEDT32.EXE	69577.exe
PID 1352 wrote to memory of 464	1352	EQNEDT32.EXE	69577.exe
PID 1352 wrote to memory of 464	1352	EQNEDT32.EXE	69577.exe
PID 464 wrote to memory of 1472	464	69577.exe	AddInProcess32.exe
PID 464 wrote to memory of 1472	464	69577.exe	AddInProcess32.exe
PID 464 wrote to memory of 1472	464	69577.exe	AddInProcess32.exe
PID 464 wrote to memory of 1472	464	69577.exe	AddInProcess32.exe
PID 464 wrote to memory of 1472	464	69577.exe	AddInProcess32.exe
PID 464 wrote to memory of 1472	464	69577.exe	AddInProcess32.exe
PID 464 wrote to memory of 1472	464	69577.exe	AddInProcess32.exe
PID 1268 wrote to memory of 1120	1268	Explorer.EXE	svchost.exe
PID 1268 wrote to memory of 1120	1268	Explorer.EXE	svchost.exe
PID 1268 wrote to memory of 1120	1268	Explorer.EXE	svchost.exe
PID 1268 wrote to memory of 1120	1268	Explorer.EXE	svchost.exe
PID 1120 wrote to memory of 1316	1120	svchost.exe	cmd.exe
PID 1120 wrote to memory of 1316	1120	svchost.exe	cmd.exe
PID 1120 wrote to memory of 1316	1120	svchost.exe	cmd.exe
PID 1120 wrote to memory of 1316	1120	svchost.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1268

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\IMG_010357.doc"
2⤵
- Drops file in Windows directory
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:792

C:\Windows\splwow64.exe
C:\Windows\splwow64.exe 12288
3⤵
PID:1812

C:\Windows\SysWOW64\svchost.exe
"C:\Windows\SysWOW64\svchost.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1120

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\AddInProcess32.exe"
3⤵
PID:1316

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:1352

C:\Users\Public\69577.exe
"C:\Users\Public\69577.exe"
2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:464

C:\Users\Admin\AppData\Local\Temp\AddInProcess32.exe
"C:\Users\Admin\AppData\Local\Temp\AddInProcess32.exe"
3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:1472

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Exploitation for Client Execution

1

T1203

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\AddInProcess32.exe
MD5
6a673bfc3b67ae9782cb31af2f234c68

SHA1
7544e89566d91e84e3cd437b9a073e5f6b56566e

SHA256
978a4093058aa2ebf05dc353897d90d950324389879b57741b64160825b5ec0e

SHA512
72c302372ce87ceda2a3c70a6005d3f9c112f1641bc7fe6824c718971233e66c07e2996d2785fa358566c38714c25ea812c05c7cfd2f588284849d495fd24f39

Download Submit
C:\Users\Admin\AppData\Local\Temp\AddInProcess32.exe
MD5
6a673bfc3b67ae9782cb31af2f234c68

SHA1
7544e89566d91e84e3cd437b9a073e5f6b56566e

SHA256
978a4093058aa2ebf05dc353897d90d950324389879b57741b64160825b5ec0e

SHA512
72c302372ce87ceda2a3c70a6005d3f9c112f1641bc7fe6824c718971233e66c07e2996d2785fa358566c38714c25ea812c05c7cfd2f588284849d495fd24f39

Download Submit
C:\Users\Public\69577.exe
MD5
23a53bec3e0bf43ec47af722a6aac7cb

SHA1
fca6e1d1690dea3911407662d8979c7cf037d754

SHA256
16160e8686be9eefc11ffc8eafdabfbcda53784d95d1b747717cbb90acaa04d4

SHA512
b21fdb1c78ddab75df07fb2bbc84f4d3c2061178e6370bcef6744019e1ea5c46152ce7aeb0cfa152ea8c730e53cdca23e27d97fd5e1fdad89c24483f68bcebf1

Download Submit
C:\Users\Public\69577.exe
MD5
23a53bec3e0bf43ec47af722a6aac7cb

SHA1
fca6e1d1690dea3911407662d8979c7cf037d754

SHA256
16160e8686be9eefc11ffc8eafdabfbcda53784d95d1b747717cbb90acaa04d4

SHA512
b21fdb1c78ddab75df07fb2bbc84f4d3c2061178e6370bcef6744019e1ea5c46152ce7aeb0cfa152ea8c730e53cdca23e27d97fd5e1fdad89c24483f68bcebf1

Download Submit
\Users\Admin\AppData\Local\Temp\AddInProcess32.exe
MD5
6a673bfc3b67ae9782cb31af2f234c68

SHA1
7544e89566d91e84e3cd437b9a073e5f6b56566e

SHA256
978a4093058aa2ebf05dc353897d90d950324389879b57741b64160825b5ec0e

SHA512
72c302372ce87ceda2a3c70a6005d3f9c112f1641bc7fe6824c718971233e66c07e2996d2785fa358566c38714c25ea812c05c7cfd2f588284849d495fd24f39

Download Submit
\Users\Public\69577.exe
MD5
23a53bec3e0bf43ec47af722a6aac7cb

SHA1
fca6e1d1690dea3911407662d8979c7cf037d754

SHA256
16160e8686be9eefc11ffc8eafdabfbcda53784d95d1b747717cbb90acaa04d4

SHA512
b21fdb1c78ddab75df07fb2bbc84f4d3c2061178e6370bcef6744019e1ea5c46152ce7aeb0cfa152ea8c730e53cdca23e27d97fd5e1fdad89c24483f68bcebf1

Download Submit
memory/464-22-0x00000000041E1000-0x00000000041E2000-memory.dmp

Filesize
4KB

Download
memory/464-10-0x0000000000000000-mapping.dmp

Download
memory/464-20-0x0000000001EE0000-0x0000000001EE1000-memory.dmp

Filesize
4KB

Download
memory/464-19-0x00000000007F0000-0x00000000007FB000-memory.dmp

Filesize
44KB

Download
memory/464-18-0x00000000041E0000-0x00000000041E1000-memory.dmp

Filesize
4KB

Download
memory/464-13-0x000000006BAA0000-0x000000006C18E000-memory.dmp

Filesize
6.9MB

Download
memory/464-14-0x00000000009B0000-0x00000000009B1000-memory.dmp

Filesize
4KB

Download
memory/464-16-0x00000000004B0000-0x00000000004CE000-memory.dmp

Filesize
120KB

Download
memory/464-17-0x00000000005C0000-0x00000000005C1000-memory.dmp

Filesize
4KB

Download
memory/792-2-0x0000000072FE1000-0x0000000072FE4000-memory.dmp

Filesize
12KB

Download
memory/792-3-0x0000000070A61000-0x0000000070A63000-memory.dmp

Filesize
8KB

Download
memory/792-4-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/848-8-0x000007FEF6B80000-0x000007FEF6DFA000-memory.dmp

Filesize
2.5MB

Download
memory/1120-38-0x0000000000590000-0x0000000000623000-memory.dmp

Filesize
588KB

Download
memory/1120-37-0x0000000000910000-0x0000000000C13000-memory.dmp

Filesize
3.0MB

Download
memory/1120-36-0x00000000000C0000-0x00000000000EE000-memory.dmp

Filesize
184KB

Download
memory/1120-35-0x00000000004E0000-0x00000000004E8000-memory.dmp

Filesize
32KB

Download
memory/1120-32-0x0000000000000000-mapping.dmp

Download
memory/1268-31-0x0000000004F80000-0x0000000005061000-memory.dmp

Filesize
900KB

Download
memory/1268-29-0x0000000004120000-0x00000000041DC000-memory.dmp

Filesize
752KB

Download
memory/1268-39-0x0000000007310000-0x0000000007462000-memory.dmp

Filesize
1.3MB

Download
memory/1316-34-0x0000000000000000-mapping.dmp

Download
memory/1352-7-0x0000000076861000-0x0000000076863000-memory.dmp

Filesize
8KB

Download
memory/1472-23-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/1472-28-0x0000000000370000-0x0000000000384000-memory.dmp

Filesize
80KB

Download
memory/1472-30-0x00000000003B0000-0x00000000003C4000-memory.dmp

Filesize
80KB

Download
memory/1472-24-0x000000000041ED00-mapping.dmp

Download
memory/1472-27-0x0000000000960000-0x0000000000C63000-memory.dmp

Filesize
3.0MB

Download
memory/1812-6-0x000007FEFC4E1000-0x000007FEFC4E3000-memory.dmp

Filesize
8KB

Download
memory/1812-5-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads