formbook | d4e1391a4c091eb93ee714ad3b7cb38363d1859c156a9c70d34f2176eb17af37

General

Target

payment copy.xlsx
Size

670KB
MD5

aea58eb70601d6c06d73b14c047d2274
SHA1

38a71f5ec2abe59a8fab0d13a46ac2a86ef0e2bf
SHA256

d4e1391a4c091eb93ee714ad3b7cb38363d1859c156a9c70d34f2176eb17af37
SHA512

8d36fc594ce7622b34764cf39612265b687a3ee1d2d644f6aebcaf215379aa5820a52f3df37c899d9663cc8a843689b1e148854b96707fae69dfb9f23910a6fa

Score

10^/10

formbook rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

C2

http://www.conciergedoctx.com/ot8m/

Decoy

digiclan.net

songlautramtuoii.online

miracleseedproducts.com

taniacastillo.com

essentialme.network

charmcitydetour.com

suprekopis.com

jimmycollier.com

thrifteee.com

rhmachinery.ltd

the05project.com

altfacebookalt.com

ein-herz-fuer-holz.com

kingohost.com

vmarines.com

2bestudio.com

triducdv.com

kp-transport.com

mybostonhwart.com

benzcat.net

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/296-74-0x0000000000400000-0x000000000042E000-memory.dmp	formbook
behavioral1/memory/296-75-0x000000000041EC80-mapping.dmp	formbook
behavioral1/memory/1220-84-0x00000000000C0000-0x00000000000EE000-memory.dmp	formbook

Blocklisted process makes network request 1 IoCs

Processes:

EQNEDT32.EXE

flow pid process

7 1164 EQNEDT32.EXE
Downloads MZ/PE file
Executes dropped EXE 3 IoCs

Processes:

shakix532232.exeshakix532232.exeshakix532232.exe

pid process

960 shakix532232.exe
1736 shakix532232.exe
296 shakix532232.exe
Loads dropped DLL 1 IoCs

Processes:

EQNEDT32.EXE

pid process

1164 EQNEDT32.EXE

flow	pid	process
7	1164	EQNEDT32.EXE

pid	process
1164	EQNEDT32.EXE

Suspicious use of SetThreadContext 3 IoCs

Processes:

shakix532232.exeshakix532232.exeNETSTAT.EXE

description	pid	process	target process
PID 960 set thread context of 296	960	shakix532232.exe	shakix532232.exe
PID 296 set thread context of 1264	296	shakix532232.exe	Explorer.EXE
PID 1220 set thread context of 1264	1220	NETSTAT.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
Gathers network information 2 TTPs 1 IoCs
Uses commandline utility to view network configuration.

System Information Discovery
T1082

Command-Line Interface
T1059

Processes:

NETSTAT.EXE

pid process

1220 NETSTAT.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

1164 EQNEDT32.EXE

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

pid	process
1220	NETSTAT.EXE

pid	process
1164	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-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote	EXCEL.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"	EXCEL.EXE
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"	EXCEL.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"	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\Toolbar	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes"	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt	EXCEL.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"	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

1088 EXCEL.EXE

pid	process
1088	EXCEL.EXE

Suspicious behavior: EnumeratesProcesses 25 IoCs

Processes:

shakix532232.exeshakix532232.exeNETSTAT.EXE

pid	process
960	shakix532232.exe
960	shakix532232.exe
960	shakix532232.exe
960	shakix532232.exe
296	shakix532232.exe
296	shakix532232.exe
1220	NETSTAT.EXE
1220	NETSTAT.EXE
1220	NETSTAT.EXE
1220	NETSTAT.EXE
1220	NETSTAT.EXE
1220	NETSTAT.EXE
1220	NETSTAT.EXE
1220	NETSTAT.EXE
1220	NETSTAT.EXE
1220	NETSTAT.EXE
1220	NETSTAT.EXE
1220	NETSTAT.EXE
1220	NETSTAT.EXE
1220	NETSTAT.EXE
1220	NETSTAT.EXE
1220	NETSTAT.EXE
1220	NETSTAT.EXE
1220	NETSTAT.EXE
1220	NETSTAT.EXE

Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

shakix532232.exeNETSTAT.EXE

pid process

296 shakix532232.exe
296 shakix532232.exe
296 shakix532232.exe
1220 NETSTAT.EXE
1220 NETSTAT.EXE

pid	process
296	shakix532232.exe
296	shakix532232.exe
296	shakix532232.exe
1220	NETSTAT.EXE
1220	NETSTAT.EXE

Suspicious use of AdjustPrivilegeToken 5 IoCs

Processes:

shakix532232.exeshakix532232.exeNETSTAT.EXEExplorer.EXE

description	pid	process
Token: SeDebugPrivilege	960	shakix532232.exe
Token: SeDebugPrivilege	296	shakix532232.exe
Token: SeDebugPrivilege	1220	NETSTAT.EXE
Token: SeShutdownPrivilege	1264	Explorer.EXE
Token: SeShutdownPrivilege	1264	Explorer.EXE

Suspicious use of FindShellTrayWindow 4 IoCs

Processes:

Explorer.EXE

pid process

1264 Explorer.EXE
1264 Explorer.EXE
1264 Explorer.EXE
1264 Explorer.EXE
Suspicious use of SendNotifyMessage 4 IoCs

Processes:

Explorer.EXE

pid process

1264 Explorer.EXE
1264 Explorer.EXE
1264 Explorer.EXE
1264 Explorer.EXE
Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

EXCEL.EXE

pid process

1088 EXCEL.EXE
1088 EXCEL.EXE
1088 EXCEL.EXE

pid	process
1264	Explorer.EXE
1264	Explorer.EXE
1264	Explorer.EXE
1264	Explorer.EXE

pid	process
1264	Explorer.EXE
1264	Explorer.EXE
1264	Explorer.EXE
1264	Explorer.EXE

pid	process
1088	EXCEL.EXE
1088	EXCEL.EXE
1088	EXCEL.EXE

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

EQNEDT32.EXEshakix532232.exeExplorer.EXENETSTAT.EXE

description	pid	process	target process
PID 1164 wrote to memory of 960	1164	EQNEDT32.EXE	shakix532232.exe
PID 1164 wrote to memory of 960	1164	EQNEDT32.EXE	shakix532232.exe
PID 1164 wrote to memory of 960	1164	EQNEDT32.EXE	shakix532232.exe
PID 1164 wrote to memory of 960	1164	EQNEDT32.EXE	shakix532232.exe
PID 960 wrote to memory of 1736	960	shakix532232.exe	shakix532232.exe
PID 960 wrote to memory of 1736	960	shakix532232.exe	shakix532232.exe
PID 960 wrote to memory of 1736	960	shakix532232.exe	shakix532232.exe
PID 960 wrote to memory of 1736	960	shakix532232.exe	shakix532232.exe
PID 960 wrote to memory of 296	960	shakix532232.exe	shakix532232.exe
PID 960 wrote to memory of 296	960	shakix532232.exe	shakix532232.exe
PID 960 wrote to memory of 296	960	shakix532232.exe	shakix532232.exe
PID 960 wrote to memory of 296	960	shakix532232.exe	shakix532232.exe
PID 960 wrote to memory of 296	960	shakix532232.exe	shakix532232.exe
PID 960 wrote to memory of 296	960	shakix532232.exe	shakix532232.exe
PID 960 wrote to memory of 296	960	shakix532232.exe	shakix532232.exe
PID 1264 wrote to memory of 1220	1264	Explorer.EXE	NETSTAT.EXE
PID 1264 wrote to memory of 1220	1264	Explorer.EXE	NETSTAT.EXE
PID 1264 wrote to memory of 1220	1264	Explorer.EXE	NETSTAT.EXE
PID 1264 wrote to memory of 1220	1264	Explorer.EXE	NETSTAT.EXE
PID 1220 wrote to memory of 1056	1220	NETSTAT.EXE	cmd.exe
PID 1220 wrote to memory of 1056	1220	NETSTAT.EXE	cmd.exe
PID 1220 wrote to memory of 1056	1220	NETSTAT.EXE	cmd.exe
PID 1220 wrote to memory of 1056	1220	NETSTAT.EXE	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1264

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\payment copy.xlsx"
2⤵
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
PID:1088

C:\Windows\SysWOW64\NETSTAT.EXE
"C:\Windows\SysWOW64\NETSTAT.EXE"
2⤵
- Suspicious use of SetThreadContext
- Gathers network information
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1220

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Roaming\shakix532232.exe"
3⤵
PID:1056

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:1164

C:\Users\Admin\AppData\Roaming\shakix532232.exe
"C:\Users\Admin\AppData\Roaming\shakix532232.exe"
2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:960

C:\Users\Admin\AppData\Roaming\shakix532232.exe
"{path}"
3⤵
- Executes dropped EXE
PID:1736

C:\Users\Admin\AppData\Roaming\shakix532232.exe
"{path}"
3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:296

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Command-Line Interface

1

T1059

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

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\shakix532232.exe
MD5
52289e533348a695d881c6df2d895f5e

SHA1
2cc712357a0d94f590eb126f2697373d9cca4ea1

SHA256
7653e46e3326fbabf9e534cbd02600f87ad38b5c9e4e175a60e27a6d90c5e6fe

SHA512
f456b1d29ed931fdc067973b76e586fd942baa0a26218c76cb2ea72a557e6fbaceba005846b366d3b3a998771e16e5b22147fcf4295a369da2240fe22a2d1b98

Download Submit
C:\Users\Admin\AppData\Roaming\shakix532232.exe
MD5
52289e533348a695d881c6df2d895f5e

SHA1
2cc712357a0d94f590eb126f2697373d9cca4ea1

SHA256
7653e46e3326fbabf9e534cbd02600f87ad38b5c9e4e175a60e27a6d90c5e6fe

SHA512
f456b1d29ed931fdc067973b76e586fd942baa0a26218c76cb2ea72a557e6fbaceba005846b366d3b3a998771e16e5b22147fcf4295a369da2240fe22a2d1b98

Download Submit
C:\Users\Admin\AppData\Roaming\shakix532232.exe
MD5
52289e533348a695d881c6df2d895f5e

SHA1
2cc712357a0d94f590eb126f2697373d9cca4ea1

SHA256
7653e46e3326fbabf9e534cbd02600f87ad38b5c9e4e175a60e27a6d90c5e6fe

SHA512
f456b1d29ed931fdc067973b76e586fd942baa0a26218c76cb2ea72a557e6fbaceba005846b366d3b3a998771e16e5b22147fcf4295a369da2240fe22a2d1b98

Download Submit
C:\Users\Admin\AppData\Roaming\shakix532232.exe
MD5
52289e533348a695d881c6df2d895f5e

SHA1
2cc712357a0d94f590eb126f2697373d9cca4ea1

SHA256
7653e46e3326fbabf9e534cbd02600f87ad38b5c9e4e175a60e27a6d90c5e6fe

SHA512
f456b1d29ed931fdc067973b76e586fd942baa0a26218c76cb2ea72a557e6fbaceba005846b366d3b3a998771e16e5b22147fcf4295a369da2240fe22a2d1b98

Download Submit
\Users\Admin\AppData\Roaming\shakix532232.exe
MD5
52289e533348a695d881c6df2d895f5e

SHA1
2cc712357a0d94f590eb126f2697373d9cca4ea1

SHA256
7653e46e3326fbabf9e534cbd02600f87ad38b5c9e4e175a60e27a6d90c5e6fe

SHA512
f456b1d29ed931fdc067973b76e586fd942baa0a26218c76cb2ea72a557e6fbaceba005846b366d3b3a998771e16e5b22147fcf4295a369da2240fe22a2d1b98

Download Submit
memory/296-78-0x00000000009C0000-0x0000000000CC3000-memory.dmp

Filesize
3.0MB

Download
memory/296-75-0x000000000041EC80-mapping.dmp

Download
memory/296-79-0x00000000003C0000-0x00000000003D4000-memory.dmp

Filesize
80KB

Download
memory/296-74-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/960-64-0x0000000000000000-mapping.dmp

Download
memory/960-67-0x00000000001A0000-0x00000000001A1000-memory.dmp

Filesize
4KB

Download
memory/960-69-0x0000000004B70000-0x0000000004B71000-memory.dmp

Filesize
4KB

Download
memory/960-70-0x0000000000410000-0x000000000041E000-memory.dmp

Filesize
56KB

Download
memory/960-71-0x0000000005170000-0x00000000051FF000-memory.dmp

Filesize
572KB

Download
memory/960-72-0x0000000000570000-0x00000000005B4000-memory.dmp

Filesize
272KB

Download
memory/1056-82-0x0000000000000000-mapping.dmp

Download
memory/1088-60-0x00000000713F1000-0x00000000713F3000-memory.dmp

Filesize
8KB

Download
memory/1088-61-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/1088-59-0x000000002F7A1000-0x000000002F7A4000-memory.dmp

Filesize
12KB

Download
memory/1164-62-0x00000000753B1000-0x00000000753B3000-memory.dmp

Filesize
8KB

Download
memory/1220-81-0x0000000000000000-mapping.dmp

Download
memory/1220-83-0x0000000000390000-0x0000000000399000-memory.dmp

Filesize
36KB

Download
memory/1220-84-0x00000000000C0000-0x00000000000EE000-memory.dmp

Filesize
184KB

Download
memory/1220-85-0x00000000020E0000-0x00000000023E3000-memory.dmp

Filesize
3.0MB

Download
memory/1220-86-0x0000000001F50000-0x0000000001FE3000-memory.dmp

Filesize
588KB

Download
memory/1264-80-0x0000000006EE0000-0x000000000704F000-memory.dmp

Filesize
1.4MB

Download
memory/1264-87-0x0000000004A50000-0x0000000004B02000-memory.dmp

Filesize
712KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads