formbook | c92aaf449b1938cb5918e73f02936eab06b7974fa441492bea95e9c68c5e5084

General

Target

Payment Ref $24,845.docx
Size

10KB
MD5

ccd4c28726088c338206933392b234cb
SHA1

0f2a9d2e7804e793afcc6e8e7a3a561f75bf4bea
SHA256

c92aaf449b1938cb5918e73f02936eab06b7974fa441492bea95e9c68c5e5084
SHA512

328ce30627e667a5a3431bb6cdb127c24d8e3202a6e771b0f438022f55a4e7a743afaf4c3fb7d75875a60815427882e784f124521721fd79161dfb58712da26a

Score

10^/10

formbook rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

C2

http://www.dragonpalcenk.com/k8n/

Decoy

foxynailserie.com

thenoyzees.com

waterrising.xyz

allmister.com

theguyscave.com

erkitap.com

spyder-club.com

raskrutisam.com

giantledlights.com

wowbeautynails.com

youmovies.site

abjms.com

enso-solutions.com

seasonalcampgroundsmn.com

lukeprater.com

mufasacapital.com

idi360.com

mask-cleaner.com

aeruswilmde.com

venkatlifecoach.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/1096-79-0x0000000000400000-0x000000000042E000-memory.dmp	formbook
behavioral1/memory/1096-80-0x000000000041EB40-mapping.dmp	formbook
behavioral1/memory/1616-89-0x0000000000080000-0x00000000000AE000-memory.dmp	formbook

Blocklisted process makes network request 1 IoCs

Processes:

EQNEDT32.EXE

flow pid process

14 1672 EQNEDT32.EXE
Downloads MZ/PE file
Executes dropped EXE 2 IoCs

Processes:

vbc.exevbc.exe

pid process

1220 vbc.exe
1096 vbc.exe

flow	pid	process
14	1672	EQNEDT32.EXE

Abuses OpenXML format to download file from external location 2 IoCs

Processes:

WINWORD.EXE

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\Toolbar	WINWORD.EXE
Key opened	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Office\Common\Offline\Files\https://itsssl.com/vyQCm	WINWORD.EXE

Loads dropped DLL 4 IoCs

Processes:

EQNEDT32.EXE

pid process

1672 EQNEDT32.EXE
1672 EQNEDT32.EXE
1672 EQNEDT32.EXE
1672 EQNEDT32.EXE
Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

pid	process
1672	EQNEDT32.EXE
1672	EQNEDT32.EXE
1672	EQNEDT32.EXE
1672	EQNEDT32.EXE

Suspicious use of SetThreadContext 3 IoCs

Processes:

vbc.exevbc.exesvchost.exe

description	pid	process	target process
PID 1220 set thread context of 1096	1220	vbc.exe	vbc.exe
PID 1096 set thread context of 1352	1096	vbc.exe	Explorer.EXE
PID 1616 set thread context of 1352	1616	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

1672 EQNEDT32.EXE

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

pid	process
1672	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-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\Toolbar	WINWORD.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes"	WINWORD.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"	WINWORD.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"	WINWORD.EXE
Key created	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel	WINWORD.EXE
Key created	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\MenuExt	WINWORD.EXE
Key created	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote	WINWORD.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"	WINWORD.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"	WINWORD.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

WINWORD.EXE

pid process

1968 WINWORD.EXE

pid	process
1968	WINWORD.EXE

Suspicious behavior: EnumeratesProcesses 18 IoCs

Processes:

vbc.exevbc.exesvchost.exe

pid	process
1220	vbc.exe
1096	vbc.exe
1096	vbc.exe
1616	svchost.exe
1616	svchost.exe
1616	svchost.exe
1616	svchost.exe
1616	svchost.exe
1616	svchost.exe
1616	svchost.exe
1616	svchost.exe
1616	svchost.exe
1616	svchost.exe
1616	svchost.exe
1616	svchost.exe
1616	svchost.exe
1616	svchost.exe
1616	svchost.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

1352 Explorer.EXE
Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

vbc.exesvchost.exe

pid process

1096 vbc.exe
1096 vbc.exe
1096 vbc.exe
1616 svchost.exe
1616 svchost.exe

pid	process
1352	Explorer.EXE

pid	process
1096	vbc.exe
1096	vbc.exe
1096	vbc.exe
1616	svchost.exe
1616	svchost.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

Processes:

vbc.exevbc.exesvchost.exeExplorer.EXEWINWORD.EXE

description	pid	process
Token: SeDebugPrivilege	1220	vbc.exe
Token: SeDebugPrivilege	1096	vbc.exe
Token: SeDebugPrivilege	1616	svchost.exe
Token: SeShutdownPrivilege	1352	Explorer.EXE
Token: SeShutdownPrivilege	1968	WINWORD.EXE
Token: SeShutdownPrivilege	1352	Explorer.EXE
Token: SeShutdownPrivilege	1352	Explorer.EXE
Token: SeShutdownPrivilege	1352	Explorer.EXE

Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

WINWORD.EXE

pid process

1968 WINWORD.EXE
1968 WINWORD.EXE

pid	process
1968	WINWORD.EXE
1968	WINWORD.EXE

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

EQNEDT32.EXEWINWORD.EXEvbc.exeExplorer.EXEsvchost.exe

description	pid	process	target process
PID 1672 wrote to memory of 1220	1672	EQNEDT32.EXE	vbc.exe
PID 1672 wrote to memory of 1220	1672	EQNEDT32.EXE	vbc.exe
PID 1672 wrote to memory of 1220	1672	EQNEDT32.EXE	vbc.exe
PID 1672 wrote to memory of 1220	1672	EQNEDT32.EXE	vbc.exe
PID 1968 wrote to memory of 1240	1968	WINWORD.EXE	splwow64.exe
PID 1968 wrote to memory of 1240	1968	WINWORD.EXE	splwow64.exe
PID 1968 wrote to memory of 1240	1968	WINWORD.EXE	splwow64.exe
PID 1968 wrote to memory of 1240	1968	WINWORD.EXE	splwow64.exe
PID 1220 wrote to memory of 1096	1220	vbc.exe	vbc.exe
PID 1220 wrote to memory of 1096	1220	vbc.exe	vbc.exe
PID 1220 wrote to memory of 1096	1220	vbc.exe	vbc.exe
PID 1220 wrote to memory of 1096	1220	vbc.exe	vbc.exe
PID 1220 wrote to memory of 1096	1220	vbc.exe	vbc.exe
PID 1220 wrote to memory of 1096	1220	vbc.exe	vbc.exe
PID 1220 wrote to memory of 1096	1220	vbc.exe	vbc.exe
PID 1352 wrote to memory of 1616	1352	Explorer.EXE	svchost.exe
PID 1352 wrote to memory of 1616	1352	Explorer.EXE	svchost.exe
PID 1352 wrote to memory of 1616	1352	Explorer.EXE	svchost.exe
PID 1352 wrote to memory of 1616	1352	Explorer.EXE	svchost.exe
PID 1616 wrote to memory of 1112	1616	svchost.exe	cmd.exe
PID 1616 wrote to memory of 1112	1616	svchost.exe	cmd.exe
PID 1616 wrote to memory of 1112	1616	svchost.exe	cmd.exe
PID 1616 wrote to memory of 1112	1616	svchost.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1352

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\Payment Ref $24,845.docx"
2⤵
- Abuses OpenXML format to download file from external location
- Drops file in Windows directory
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1968

C:\Windows\splwow64.exe
C:\Windows\splwow64.exe 12288
3⤵
PID:1240

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:1616

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Public\vbc.exe"
3⤵
PID:1112

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:1672

C:\Users\Public\vbc.exe
"C:\Users\Public\vbc.exe"
2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1220

C:\Users\Public\vbc.exe
"C:\Users\Public\vbc.exe"
3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:1096

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scripting

1

T1064

Exploitation for Client Execution

1

T1203

Persistence

Privilege Escalation

Defense Evasion

Scripting

1

T1064

Modify Registry

1

T1112

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Public\vbc.exe
MD5
e7ab6f20b9320cf5f2537f2e402bb106

SHA1
569f0fdbf99d05af519759f9b0bf392d8e6608ed

SHA256
9f7fd0ad05c3b8f6d3945a0753b7b20fc53528cfbf7c8b4a2ab7f49795937b44

SHA512
4aa8de9ac929ff3f26a7296336990584cd3e0d467a9e6da49689dc72f6ef0becb0c96a653e74213d829f88ef12c060adb0cb8f7a506e0a75565a1a073d06a50c

Download Submit
C:\Users\Public\vbc.exe
MD5
e7ab6f20b9320cf5f2537f2e402bb106

SHA1
569f0fdbf99d05af519759f9b0bf392d8e6608ed

SHA256
9f7fd0ad05c3b8f6d3945a0753b7b20fc53528cfbf7c8b4a2ab7f49795937b44

SHA512
4aa8de9ac929ff3f26a7296336990584cd3e0d467a9e6da49689dc72f6ef0becb0c96a653e74213d829f88ef12c060adb0cb8f7a506e0a75565a1a073d06a50c

Download Submit
C:\Users\Public\vbc.exe
MD5
e7ab6f20b9320cf5f2537f2e402bb106

SHA1
569f0fdbf99d05af519759f9b0bf392d8e6608ed

SHA256
9f7fd0ad05c3b8f6d3945a0753b7b20fc53528cfbf7c8b4a2ab7f49795937b44

SHA512
4aa8de9ac929ff3f26a7296336990584cd3e0d467a9e6da49689dc72f6ef0becb0c96a653e74213d829f88ef12c060adb0cb8f7a506e0a75565a1a073d06a50c

Download Submit
\Users\Public\vbc.exe
MD5
e7ab6f20b9320cf5f2537f2e402bb106

SHA1
569f0fdbf99d05af519759f9b0bf392d8e6608ed

SHA256
9f7fd0ad05c3b8f6d3945a0753b7b20fc53528cfbf7c8b4a2ab7f49795937b44

SHA512
4aa8de9ac929ff3f26a7296336990584cd3e0d467a9e6da49689dc72f6ef0becb0c96a653e74213d829f88ef12c060adb0cb8f7a506e0a75565a1a073d06a50c

Download Submit
\Users\Public\vbc.exe
MD5
e7ab6f20b9320cf5f2537f2e402bb106

SHA1
569f0fdbf99d05af519759f9b0bf392d8e6608ed

SHA256
9f7fd0ad05c3b8f6d3945a0753b7b20fc53528cfbf7c8b4a2ab7f49795937b44

SHA512
4aa8de9ac929ff3f26a7296336990584cd3e0d467a9e6da49689dc72f6ef0becb0c96a653e74213d829f88ef12c060adb0cb8f7a506e0a75565a1a073d06a50c

Download Submit
\Users\Public\vbc.exe
MD5
e7ab6f20b9320cf5f2537f2e402bb106

SHA1
569f0fdbf99d05af519759f9b0bf392d8e6608ed

SHA256
9f7fd0ad05c3b8f6d3945a0753b7b20fc53528cfbf7c8b4a2ab7f49795937b44

SHA512
4aa8de9ac929ff3f26a7296336990584cd3e0d467a9e6da49689dc72f6ef0becb0c96a653e74213d829f88ef12c060adb0cb8f7a506e0a75565a1a073d06a50c

Download Submit
\Users\Public\vbc.exe
MD5
e7ab6f20b9320cf5f2537f2e402bb106

SHA1
569f0fdbf99d05af519759f9b0bf392d8e6608ed

SHA256
9f7fd0ad05c3b8f6d3945a0753b7b20fc53528cfbf7c8b4a2ab7f49795937b44

SHA512
4aa8de9ac929ff3f26a7296336990584cd3e0d467a9e6da49689dc72f6ef0becb0c96a653e74213d829f88ef12c060adb0cb8f7a506e0a75565a1a073d06a50c

Download Submit
memory/1096-79-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/1096-84-0x0000000000180000-0x0000000000194000-memory.dmp

Filesize
80KB

Download
memory/1096-83-0x0000000000A60000-0x0000000000D63000-memory.dmp

Filesize
3.0MB

Download
memory/1096-80-0x000000000041EB40-mapping.dmp

Download
memory/1112-87-0x0000000000000000-mapping.dmp

Download
memory/1220-77-0x0000000005770000-0x00000000057E9000-memory.dmp

Filesize
484KB

Download
memory/1220-68-0x0000000000000000-mapping.dmp

Download
memory/1220-76-0x0000000000310000-0x0000000000320000-memory.dmp

Filesize
64KB

Download
memory/1220-74-0x0000000004DC0000-0x0000000004DC1000-memory.dmp

Filesize
4KB

Download
memory/1220-78-0x0000000000AC0000-0x0000000000AFD000-memory.dmp

Filesize
244KB

Download
memory/1220-71-0x0000000001390000-0x0000000001391000-memory.dmp

Filesize
4KB

Download
memory/1240-75-0x000007FEFC1D1000-0x000007FEFC1D3000-memory.dmp

Filesize
8KB

Download
memory/1240-73-0x0000000000000000-mapping.dmp

Download
memory/1352-93-0x0000000006D10000-0x0000000006E21000-memory.dmp

Filesize
1.1MB

Download
memory/1352-85-0x0000000006B40000-0x0000000006C51000-memory.dmp

Filesize
1.1MB

Download
memory/1616-88-0x00000000004E0000-0x00000000004E8000-memory.dmp

Filesize
32KB

Download
memory/1616-91-0x00000000007A0000-0x0000000000833000-memory.dmp

Filesize
588KB

Download
memory/1616-86-0x0000000000000000-mapping.dmp

Download
memory/1616-90-0x0000000000980000-0x0000000000C83000-memory.dmp

Filesize
3.0MB

Download
memory/1616-89-0x0000000000080000-0x00000000000AE000-memory.dmp

Filesize
184KB

Download
memory/1672-63-0x0000000075DA1000-0x0000000075DA3000-memory.dmp

Filesize
8KB

Download
memory/1968-61-0x0000000070831000-0x0000000070833000-memory.dmp

Filesize
8KB

Download
memory/1968-62-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/1968-92-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/1968-60-0x0000000072DB1000-0x0000000072DB4000-memory.dmp

Filesize
12KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads