formbook | 54c13afdad5b24209f1480db2f8243bb28e15aa0e6fb0d7b5df25422aafeaaac

General

Target

PURCHASE ORDER.doc
Size

22KB
MD5

5168cb1584b1bdaa02c43349a1c50cb7
SHA1

5fd015db6286e5ce59ab7d37afae4f921403945b
SHA256

54c13afdad5b24209f1480db2f8243bb28e15aa0e6fb0d7b5df25422aafeaaac
SHA512

46aeb2c31def2ba5f2a75182b93c40f4275df8984f402346e3fab52baab7f5563e572d2c273336c02cbe9b3fda0aadedde07cbd50d8112371a1fd7e2cee9266c

Score

10^/10

formbook ed9s rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

ed9s

C2

http://www.vaughnmethod.com/ed9s/

Decoy

pocketoptioniraq.com

merabestsolutions.com

atelectronics.site

fuxueshi.net

infinitystay.com

forensicconcept.site

txpmachine.com

masterwhs.xyz

dia-gnwsis.art

fulltiltnodes.com

bigbnbbsc.com

formation-figma.com

bonanacroin.net

medicalmarijuanasatx.com

bagnavy.com

aaegiscares.net

presentationpublicschool.com

bestyousite.site

prescriptionn.com

beyondthenormbouquets.com

Signatures

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

Formbook Payload 4 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/2008-78-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2008-79-0x000000000041F160-mapping.dmp	formbook
behavioral1/memory/2008-85-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/1256-91-0x0000000000080000-0x00000000000AF000-memory.dmp	formbook

Blocklisted process makes network request 1 IoCs

Processes:

EQNEDT32.EXE

flow pid process

5 1976 EQNEDT32.EXE
Downloads MZ/PE file
Executes dropped EXE 2 IoCs

Processes:

obinnaft56985.exeobinnaft56985.exe

pid process

1528 obinnaft56985.exe
2008 obinnaft56985.exe
Loads dropped DLL 1 IoCs

Processes:

EQNEDT32.EXE

pid process

1976 EQNEDT32.EXE

flow	pid	process
5	1976	EQNEDT32.EXE

pid	process
1528	obinnaft56985.exe
2008	obinnaft56985.exe

pid	process
1976	EQNEDT32.EXE

Suspicious use of SetThreadContext 4 IoCs

Processes:

obinnaft56985.exeobinnaft56985.exechkdsk.exe

description	pid	process	target process
PID 1528 set thread context of 2008	1528	obinnaft56985.exe	obinnaft56985.exe
PID 2008 set thread context of 1208	2008	obinnaft56985.exe	Explorer.EXE
PID 2008 set thread context of 1208	2008	obinnaft56985.exe	Explorer.EXE
PID 1256 set thread context of 1208	1256	chkdsk.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
Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry
T1012

System Information Discovery
T1082

Processes:

chkdsk.exe

description ioc process

Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier chkdsk.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

1976 EQNEDT32.EXE

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

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	chkdsk.exe

pid	process
1976	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-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\EXCEL.EXE/3000"	WINWORD.EXE
Key created	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\MenuExt	WINWORD.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes"	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
Key created	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel	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\Toolbar	WINWORD.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

WINWORD.EXE

pid process

1648 WINWORD.EXE

pid	process
1648	WINWORD.EXE

Suspicious behavior: EnumeratesProcesses 19 IoCs

Processes:

obinnaft56985.exechkdsk.exe

pid	process
2008	obinnaft56985.exe
2008	obinnaft56985.exe
2008	obinnaft56985.exe
1256	chkdsk.exe
1256	chkdsk.exe
1256	chkdsk.exe
1256	chkdsk.exe
1256	chkdsk.exe
1256	chkdsk.exe
1256	chkdsk.exe
1256	chkdsk.exe
1256	chkdsk.exe
1256	chkdsk.exe
1256	chkdsk.exe
1256	chkdsk.exe
1256	chkdsk.exe
1256	chkdsk.exe
1256	chkdsk.exe
1256	chkdsk.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

1208 Explorer.EXE
Suspicious behavior: MapViewOfSection 6 IoCs

Processes:

obinnaft56985.exechkdsk.exe

pid process

2008 obinnaft56985.exe
2008 obinnaft56985.exe
2008 obinnaft56985.exe
2008 obinnaft56985.exe
1256 chkdsk.exe
1256 chkdsk.exe

pid	process
1208	Explorer.EXE

Suspicious use of AdjustPrivilegeToken 6 IoCs

Processes:

obinnaft56985.exechkdsk.exeExplorer.EXE

description	pid	process
Token: SeDebugPrivilege	2008	obinnaft56985.exe
Token: SeDebugPrivilege	1256	chkdsk.exe
Token: SeShutdownPrivilege	1208	Explorer.EXE
Token: SeShutdownPrivilege	1208	Explorer.EXE
Token: SeShutdownPrivilege	1208	Explorer.EXE
Token: SeShutdownPrivilege	1208	Explorer.EXE

Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

Explorer.EXE

pid process

1208 Explorer.EXE
1208 Explorer.EXE
Suspicious use of SendNotifyMessage 2 IoCs

Processes:

Explorer.EXE

pid process

1208 Explorer.EXE
1208 Explorer.EXE
Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

WINWORD.EXE

pid process

1648 WINWORD.EXE
1648 WINWORD.EXE

pid	process
1208	Explorer.EXE
1208	Explorer.EXE

pid	process
1208	Explorer.EXE
1208	Explorer.EXE

pid	process
1648	WINWORD.EXE
1648	WINWORD.EXE

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

EQNEDT32.EXEWINWORD.EXEobinnaft56985.exeExplorer.EXEchkdsk.exe

description	pid	process	target process
PID 1976 wrote to memory of 1528	1976	EQNEDT32.EXE	obinnaft56985.exe
PID 1976 wrote to memory of 1528	1976	EQNEDT32.EXE	obinnaft56985.exe
PID 1976 wrote to memory of 1528	1976	EQNEDT32.EXE	obinnaft56985.exe
PID 1976 wrote to memory of 1528	1976	EQNEDT32.EXE	obinnaft56985.exe
PID 1648 wrote to memory of 1744	1648	WINWORD.EXE	splwow64.exe
PID 1648 wrote to memory of 1744	1648	WINWORD.EXE	splwow64.exe
PID 1648 wrote to memory of 1744	1648	WINWORD.EXE	splwow64.exe
PID 1648 wrote to memory of 1744	1648	WINWORD.EXE	splwow64.exe
PID 1528 wrote to memory of 2008	1528	obinnaft56985.exe	obinnaft56985.exe
PID 1528 wrote to memory of 2008	1528	obinnaft56985.exe	obinnaft56985.exe
PID 1528 wrote to memory of 2008	1528	obinnaft56985.exe	obinnaft56985.exe
PID 1528 wrote to memory of 2008	1528	obinnaft56985.exe	obinnaft56985.exe
PID 1528 wrote to memory of 2008	1528	obinnaft56985.exe	obinnaft56985.exe
PID 1528 wrote to memory of 2008	1528	obinnaft56985.exe	obinnaft56985.exe
PID 1528 wrote to memory of 2008	1528	obinnaft56985.exe	obinnaft56985.exe
PID 1208 wrote to memory of 1256	1208	Explorer.EXE	chkdsk.exe
PID 1208 wrote to memory of 1256	1208	Explorer.EXE	chkdsk.exe
PID 1208 wrote to memory of 1256	1208	Explorer.EXE	chkdsk.exe
PID 1208 wrote to memory of 1256	1208	Explorer.EXE	chkdsk.exe
PID 1256 wrote to memory of 1836	1256	chkdsk.exe	cmd.exe
PID 1256 wrote to memory of 1836	1256	chkdsk.exe	cmd.exe
PID 1256 wrote to memory of 1836	1256	chkdsk.exe	cmd.exe
PID 1256 wrote to memory of 1836	1256	chkdsk.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:1208

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\PURCHASE ORDER.doc"
2⤵
- Drops file in Windows directory
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1648

C:\Windows\splwow64.exe
C:\Windows\splwow64.exe 12288
3⤵
PID:1744

C:\Windows\SysWOW64\chkdsk.exe
"C:\Windows\SysWOW64\chkdsk.exe"
2⤵
- Suspicious use of SetThreadContext
- Enumerates system info in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1256

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Roaming\obinnaft56985.exe"
3⤵
PID:1836

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:1976

C:\Users\Admin\AppData\Roaming\obinnaft56985.exe
"C:\Users\Admin\AppData\Roaming\obinnaft56985.exe"
2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1528

C:\Users\Admin\AppData\Roaming\obinnaft56985.exe
"C:\Users\Admin\AppData\Roaming\obinnaft56985.exe"
3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:2008

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

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\obinnaft56985.exe
MD5
e26a74c3a4ed07700a690e1763ea18b8

SHA1
02b7b6075564632a4671ea51bf1a1a0a2bfc8200

SHA256
76cd5f994be53f3f24e2b2018263b9ab582e84870ee8d24f38c6d11adae3688c

SHA512
866a172834804e71ab75636e081677107efedd120b480aa2e28a74e51214a8e3b422689c6a044ccaafd4177cbeace2fc89be118992bd5ec4b6680528704e9701

Download Submit
C:\Users\Admin\AppData\Roaming\obinnaft56985.exe
MD5
e26a74c3a4ed07700a690e1763ea18b8

SHA1
02b7b6075564632a4671ea51bf1a1a0a2bfc8200

SHA256
76cd5f994be53f3f24e2b2018263b9ab582e84870ee8d24f38c6d11adae3688c

SHA512
866a172834804e71ab75636e081677107efedd120b480aa2e28a74e51214a8e3b422689c6a044ccaafd4177cbeace2fc89be118992bd5ec4b6680528704e9701

Download Submit
C:\Users\Admin\AppData\Roaming\obinnaft56985.exe
MD5
e26a74c3a4ed07700a690e1763ea18b8

SHA1
02b7b6075564632a4671ea51bf1a1a0a2bfc8200

SHA256
76cd5f994be53f3f24e2b2018263b9ab582e84870ee8d24f38c6d11adae3688c

SHA512
866a172834804e71ab75636e081677107efedd120b480aa2e28a74e51214a8e3b422689c6a044ccaafd4177cbeace2fc89be118992bd5ec4b6680528704e9701

Download Submit
\Users\Admin\AppData\Roaming\obinnaft56985.exe
MD5
e26a74c3a4ed07700a690e1763ea18b8

SHA1
02b7b6075564632a4671ea51bf1a1a0a2bfc8200

SHA256
76cd5f994be53f3f24e2b2018263b9ab582e84870ee8d24f38c6d11adae3688c

SHA512
866a172834804e71ab75636e081677107efedd120b480aa2e28a74e51214a8e3b422689c6a044ccaafd4177cbeace2fc89be118992bd5ec4b6680528704e9701

Download Submit
memory/1208-94-0x0000000006C20000-0x0000000006D26000-memory.dmp

Filesize
1.0MB

Download
memory/1208-97-0x000007FE812A0000-0x000007FE812AA000-memory.dmp

Filesize
40KB

Download
memory/1208-96-0x000007FEF5A20000-0x000007FEF5B63000-memory.dmp

Filesize
1.3MB

Download
memory/1208-87-0x0000000007510000-0x0000000007679000-memory.dmp

Filesize
1.4MB

Download
memory/1208-84-0x0000000007710000-0x000000000789F000-memory.dmp

Filesize
1.6MB

Download
memory/1256-93-0x0000000001F30000-0x0000000001FC3000-memory.dmp

Filesize
588KB

Download
memory/1256-92-0x0000000002160000-0x0000000002463000-memory.dmp

Filesize
3.0MB

Download
memory/1256-91-0x0000000000080000-0x00000000000AF000-memory.dmp

Filesize
188KB

Download
memory/1256-90-0x0000000000360000-0x0000000000367000-memory.dmp

Filesize
28KB

Download
memory/1256-88-0x0000000000000000-mapping.dmp

Download
memory/1528-69-0x0000000000FB0000-0x0000000000FB1000-memory.dmp

Filesize
4KB

Download
memory/1528-72-0x0000000000290000-0x00000000002A1000-memory.dmp

Filesize
68KB

Download
memory/1528-66-0x0000000000000000-mapping.dmp

Download
memory/1528-75-0x0000000000D80000-0x0000000000DD0000-memory.dmp

Filesize
320KB

Download
memory/1528-71-0x0000000004E20000-0x0000000004E21000-memory.dmp

Filesize
4KB

Download
memory/1648-61-0x0000000070451000-0x0000000070453000-memory.dmp

Filesize
8KB

Download
memory/1648-62-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/1648-95-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/1648-63-0x0000000076641000-0x0000000076643000-memory.dmp

Filesize
8KB

Download
memory/1648-60-0x00000000729D1000-0x00000000729D4000-memory.dmp

Filesize
12KB

Download
memory/1744-73-0x0000000000000000-mapping.dmp

Download
memory/1744-74-0x000007FEFBED1000-0x000007FEFBED3000-memory.dmp

Filesize
8KB

Download
memory/1836-89-0x0000000000000000-mapping.dmp

Download
memory/2008-77-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2008-86-0x0000000000360000-0x0000000000374000-memory.dmp

Filesize
80KB

Download
memory/2008-85-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2008-82-0x0000000000850000-0x0000000000B53000-memory.dmp

Filesize
3.0MB

Download
memory/2008-83-0x0000000000120000-0x0000000000134000-memory.dmp

Filesize
80KB

Download
memory/2008-76-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2008-79-0x000000000041F160-mapping.dmp

Download
memory/2008-78-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads