formbook | f73c305a30ff01530c49c735e5c3b92b38248ecab0355b60d7e6e61eaebd398b

General

Target

Payment_Advice .doc.rtf
Size

631KB
MD5

02f8946d106c9da4187129f2eb0278b9
SHA1

b9fed8b99b334c1b0062093bfb42eb62e2d8e562
SHA256

f73c305a30ff01530c49c735e5c3b92b38248ecab0355b60d7e6e61eaebd398b
SHA512

1a0ae4cab6e69d08748a8d459133bc5109905565f430866004176097893e3b7b5e4b4c28bc4e7b23d99581b0cdf72074f036e86d5038809b8b781121379f2791

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/668-74-0x0000000000400000-0x000000000042E000-memory.dmp	formbook
behavioral1/memory/1964-82-0x0000000000080000-0x00000000000AE000-memory.dmp	formbook

Blocklisted process makes network request 1 IoCs

Processes:

EQNEDT32.EXE

flow pid process

6 1976 EQNEDT32.EXE
Downloads MZ/PE file
Executes dropped EXE 2 IoCs

Processes:

prosper2192.exeprosper2192.exe

pid process

992 prosper2192.exe
668 prosper2192.exe
Loads dropped DLL 2 IoCs

Processes:

EQNEDT32.EXEprosper2192.exe

pid process

1976 EQNEDT32.EXE
992 prosper2192.exe

flow	pid	process
6	1976	EQNEDT32.EXE

pid	process
992	prosper2192.exe
668	prosper2192.exe

pid	process
1976	EQNEDT32.EXE
992	prosper2192.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

prosper2192.exeprosper2192.exeraserver.exe

description	pid	process	target process
PID 992 set thread context of 668	992	prosper2192.exe	prosper2192.exe
PID 668 set thread context of 1196	668	prosper2192.exe	Explorer.EXE
PID 1964 set thread context of 1196	1964	raserver.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\prosper2192.exe	nsis_installer_1
\Users\Admin\AppData\Roaming\prosper2192.exe	nsis_installer_2
C:\Users\Admin\AppData\Roaming\prosper2192.exe	nsis_installer_1
C:\Users\Admin\AppData\Roaming\prosper2192.exe	nsis_installer_2
C:\Users\Admin\AppData\Roaming\prosper2192.exe	nsis_installer_1
C:\Users\Admin\AppData\Roaming\prosper2192.exe	nsis_installer_2
C:\Users\Admin\AppData\Roaming\prosper2192.exe	nsis_installer_1
C:\Users\Admin\AppData\Roaming\prosper2192.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

1976 EQNEDT32.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
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 (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\Se&nd to OneNote	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	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
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

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

WINWORD.EXE

pid process

484 WINWORD.EXE

pid	process
484	WINWORD.EXE

Suspicious behavior: EnumeratesProcesses 28 IoCs

Processes:

prosper2192.exeraserver.exe

pid	process
668	prosper2192.exe
668	prosper2192.exe
1964	raserver.exe
1964	raserver.exe
1964	raserver.exe
1964	raserver.exe
1964	raserver.exe
1964	raserver.exe
1964	raserver.exe
1964	raserver.exe
1964	raserver.exe
1964	raserver.exe
1964	raserver.exe
1964	raserver.exe
1964	raserver.exe
1964	raserver.exe
1964	raserver.exe
1964	raserver.exe
1964	raserver.exe
1964	raserver.exe
1964	raserver.exe
1964	raserver.exe
1964	raserver.exe
1964	raserver.exe
1964	raserver.exe
1964	raserver.exe
1964	raserver.exe
1964	raserver.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

1196 Explorer.EXE
Suspicious behavior: MapViewOfSection 6 IoCs

Processes:

prosper2192.exeprosper2192.exeraserver.exe

pid process

992 prosper2192.exe
668 prosper2192.exe
668 prosper2192.exe
668 prosper2192.exe
1964 raserver.exe
1964 raserver.exe

pid	process
1196	Explorer.EXE

pid	process
992	prosper2192.exe
668	prosper2192.exe
668	prosper2192.exe
668	prosper2192.exe
1964	raserver.exe
1964	raserver.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

Processes:

prosper2192.exeExplorer.EXEraserver.exe

description	pid	process
Token: SeDebugPrivilege	668	prosper2192.exe
Token: SeShutdownPrivilege	1196	Explorer.EXE
Token: SeDebugPrivilege	1964	raserver.exe
Token: SeShutdownPrivilege	1196	Explorer.EXE
Token: SeShutdownPrivilege	1196	Explorer.EXE

Suspicious use of FindShellTrayWindow 4 IoCs

Processes:

Explorer.EXE

pid process

1196 Explorer.EXE
1196 Explorer.EXE
1196 Explorer.EXE
1196 Explorer.EXE
Suspicious use of SendNotifyMessage 4 IoCs

Processes:

Explorer.EXE

pid process

1196 Explorer.EXE
1196 Explorer.EXE
1196 Explorer.EXE
1196 Explorer.EXE
Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

WINWORD.EXE

pid process

484 WINWORD.EXE
484 WINWORD.EXE

pid	process
1196	Explorer.EXE
1196	Explorer.EXE
1196	Explorer.EXE
1196	Explorer.EXE

pid	process
1196	Explorer.EXE
1196	Explorer.EXE
1196	Explorer.EXE
1196	Explorer.EXE

pid	process
484	WINWORD.EXE
484	WINWORD.EXE

Suspicious use of WriteProcessMemory 21 IoCs

Processes:

EQNEDT32.EXEprosper2192.exeExplorer.EXEraserver.exeWINWORD.EXE

description	pid	process	target process
PID 1976 wrote to memory of 992	1976	EQNEDT32.EXE	prosper2192.exe
PID 1976 wrote to memory of 992	1976	EQNEDT32.EXE	prosper2192.exe
PID 1976 wrote to memory of 992	1976	EQNEDT32.EXE	prosper2192.exe
PID 1976 wrote to memory of 992	1976	EQNEDT32.EXE	prosper2192.exe
PID 992 wrote to memory of 668	992	prosper2192.exe	prosper2192.exe
PID 992 wrote to memory of 668	992	prosper2192.exe	prosper2192.exe
PID 992 wrote to memory of 668	992	prosper2192.exe	prosper2192.exe
PID 992 wrote to memory of 668	992	prosper2192.exe	prosper2192.exe
PID 992 wrote to memory of 668	992	prosper2192.exe	prosper2192.exe
PID 1196 wrote to memory of 1964	1196	Explorer.EXE	raserver.exe
PID 1196 wrote to memory of 1964	1196	Explorer.EXE	raserver.exe
PID 1196 wrote to memory of 1964	1196	Explorer.EXE	raserver.exe
PID 1196 wrote to memory of 1964	1196	Explorer.EXE	raserver.exe
PID 1964 wrote to memory of 1612	1964	raserver.exe	cmd.exe
PID 1964 wrote to memory of 1612	1964	raserver.exe	cmd.exe
PID 1964 wrote to memory of 1612	1964	raserver.exe	cmd.exe
PID 1964 wrote to memory of 1612	1964	raserver.exe	cmd.exe
PID 484 wrote to memory of 928	484	WINWORD.EXE	splwow64.exe
PID 484 wrote to memory of 928	484	WINWORD.EXE	splwow64.exe
PID 484 wrote to memory of 928	484	WINWORD.EXE	splwow64.exe
PID 484 wrote to memory of 928	484	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:1196

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_Advice .doc.rtf"
2⤵
- Drops file in Windows directory
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:484

C:\Windows\splwow64.exe
C:\Windows\splwow64.exe 12288
3⤵
PID:928

C:\Windows\SysWOW64\raserver.exe
"C:\Windows\SysWOW64\raserver.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1964

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Roaming\prosper2192.exe"
3⤵
PID:1612

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\prosper2192.exe
"C:\Users\Admin\AppData\Roaming\prosper2192.exe"
2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:992

C:\Users\Admin\AppData\Roaming\prosper2192.exe
"C:\Users\Admin\AppData\Roaming\prosper2192.exe"
3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:668

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

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Roaming\prosper2192.exe
MD5
7f3fc7d086447a7e15e0d32bdd885cbc

SHA1
172a3f88a776b461b0e98f72b55b6a82dcf23f2d

SHA256
ce2ca323cae4838375c60305a3706e6828ab9fd8e30b65b1d0f4c87dbce0f29b

SHA512
0805830a0ad0f7beef0fa993a6a4ffee0fe27bda95e04009317b0779d8fba1b26b1bd48de64f0d682554c614c4df68b16b8af2d0c2e98099d3e15e29650b7554

Download Submit
C:\Users\Admin\AppData\Roaming\prosper2192.exe
MD5
7f3fc7d086447a7e15e0d32bdd885cbc

SHA1
172a3f88a776b461b0e98f72b55b6a82dcf23f2d

SHA256
ce2ca323cae4838375c60305a3706e6828ab9fd8e30b65b1d0f4c87dbce0f29b

SHA512
0805830a0ad0f7beef0fa993a6a4ffee0fe27bda95e04009317b0779d8fba1b26b1bd48de64f0d682554c614c4df68b16b8af2d0c2e98099d3e15e29650b7554

Download Submit
C:\Users\Admin\AppData\Roaming\prosper2192.exe
MD5
7f3fc7d086447a7e15e0d32bdd885cbc

SHA1
172a3f88a776b461b0e98f72b55b6a82dcf23f2d

SHA256
ce2ca323cae4838375c60305a3706e6828ab9fd8e30b65b1d0f4c87dbce0f29b

SHA512
0805830a0ad0f7beef0fa993a6a4ffee0fe27bda95e04009317b0779d8fba1b26b1bd48de64f0d682554c614c4df68b16b8af2d0c2e98099d3e15e29650b7554

Download Submit
\Users\Admin\AppData\Local\Temp\nsx8393.tmp\8yuqrvh.dll
MD5
9d845aba27c170190365443f32960e9a

SHA1
07ba91146d4277f353430d6da94d73cc5f31c60a

SHA256
e6174bb1b7294a9ca293dc37b928c9a01af06f535d7cebbe35bc74dffe195639

SHA512
eede88327482fe8442447271ba4fbeafbc49b5f60e60558a0d85883b14beb1b7eb3c539cc6b6225767cb198a20552f289d70fd307d5d32982bd5c55c6b77f027

Download Submit
\Users\Admin\AppData\Roaming\prosper2192.exe
MD5
7f3fc7d086447a7e15e0d32bdd885cbc

SHA1
172a3f88a776b461b0e98f72b55b6a82dcf23f2d

SHA256
ce2ca323cae4838375c60305a3706e6828ab9fd8e30b65b1d0f4c87dbce0f29b

SHA512
0805830a0ad0f7beef0fa993a6a4ffee0fe27bda95e04009317b0779d8fba1b26b1bd48de64f0d682554c614c4df68b16b8af2d0c2e98099d3e15e29650b7554

Download Submit
memory/484-60-0x00000000722D1000-0x00000000722D4000-memory.dmp

Filesize
12KB

Download
memory/484-88-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/484-62-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/484-61-0x000000006FD51000-0x000000006FD53000-memory.dmp

Filesize
8KB

Download
memory/668-76-0x0000000000490000-0x00000000004A4000-memory.dmp

Filesize
80KB

Download
memory/668-72-0x000000000041EB70-mapping.dmp

Download
memory/668-74-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/668-75-0x0000000000700000-0x0000000000A03000-memory.dmp

Filesize
3.0MB

Download
memory/928-85-0x0000000000000000-mapping.dmp

Download
memory/928-86-0x000007FEFB761000-0x000007FEFB763000-memory.dmp

Filesize
8KB

Download
memory/992-65-0x0000000000000000-mapping.dmp

Download
memory/992-70-0x0000000002C00000-0x0000000002C01000-memory.dmp

Filesize
4KB

Download
memory/992-71-0x0000000002C01000-0x0000000002C03000-memory.dmp

Filesize
8KB

Download
memory/1196-77-0x0000000006490000-0x00000000065C2000-memory.dmp

Filesize
1.2MB

Download
memory/1196-87-0x0000000004280000-0x0000000004368000-memory.dmp

Filesize
928KB

Download
memory/1612-80-0x0000000000000000-mapping.dmp

Download
memory/1964-81-0x00000000003A0000-0x00000000003BC000-memory.dmp

Filesize
112KB

Download
memory/1964-84-0x0000000001DB0000-0x0000000001E43000-memory.dmp

Filesize
588KB

Download
memory/1964-83-0x0000000001FE0000-0x00000000022E3000-memory.dmp

Filesize
3.0MB

Download
memory/1964-82-0x0000000000080000-0x00000000000AE000-memory.dmp

Filesize
184KB

Download
memory/1964-78-0x0000000000000000-mapping.dmp

Download
memory/1976-63-0x0000000075AD1000-0x0000000075AD3000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

Loading Replay Monitor...

Downloads