formbook | 79e6aa9fb18847e4c5b5e00dd742b3b00057d20bbede37f1c8740b21666b44e1

General

Target

tmp.exe
Size

538KB
MD5

c0138bfa58d20206600eaf1657f95f75
SHA1

fa232e4df93c81093044ff552381d41ebcc5f443
SHA256

79e6aa9fb18847e4c5b5e00dd742b3b00057d20bbede37f1c8740b21666b44e1
SHA512

082a20109057787fdb3d8bfa5607e379c4d803d862367078e24a40018c3a6ed4fa3c09ce0c95152a169cfa98f2348c47e20af1cbf4b69dd164fcc6b9a80040bd

Score

10^/10

formbook bk19 rat spyware stealer suricata trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

bk19

Decoy

parkersuite.com

quanzhujs.com

ofourfuture.com

palazzonutraceuticals.com

xowshfv.top

casinoguide.bet

kangdurian.com

luxurymainewaterfront.com

sdjyyy.com

uglymugvs.com

lawncaregeni.com

simproful.net

upskirts-tube.com

taiylormade.com

okyxx1k4w.digital

shop-marvel.direct

tecdiario.com

click2claim.xyz

2dot2dot.space

gercektarih.online

Signatures

Formbook
Formbook is a data stealing malware which is capable of stealing data.
trojan spyware stealer formbook
suricata: ET MALWARE FormBook CnC Checkin (GET)
suricata: ET MALWARE FormBook CnC Checkin (GET)
suricata

Formbook Payload 5 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/1328-63-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/1328-64-0x000000000041F0D0-mapping.dmp	formbook
behavioral1/memory/1328-70-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/936-74-0x00000000000D0000-0x00000000000FF000-memory.dmp	formbook
behavioral1/memory/936-78-0x00000000000D0000-0x00000000000FF000-memory.dmp	formbook

Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

1888 cmd.exe

pid	process
1888	cmd.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

tmp.exetmp.exemstsc.exe

description	pid	process	target process
PID 1948 set thread context of 1328	1948	tmp.exe	tmp.exe
PID 1328 set thread context of 1256	1328	tmp.exe	Explorer.EXE
PID 936 set thread context of 1256	936	mstsc.exe	Explorer.EXE

Suspicious behavior: EnumeratesProcesses 18 IoCs

Processes:

tmp.exetmp.exemstsc.exe

pid	process
1948	tmp.exe
1328	tmp.exe
1328	tmp.exe
936	mstsc.exe
936	mstsc.exe
936	mstsc.exe
936	mstsc.exe
936	mstsc.exe
936	mstsc.exe
936	mstsc.exe
936	mstsc.exe
936	mstsc.exe
936	mstsc.exe
936	mstsc.exe
936	mstsc.exe
936	mstsc.exe
936	mstsc.exe
936	mstsc.exe

Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

tmp.exemstsc.exe

pid process

1328 tmp.exe
1328 tmp.exe
1328 tmp.exe
936 mstsc.exe
936 mstsc.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

tmp.exetmp.exemstsc.exe

description pid process

Token: SeDebugPrivilege 1948 tmp.exe
Token: SeDebugPrivilege 1328 tmp.exe
Token: SeDebugPrivilege 936 mstsc.exe
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

Explorer.EXE

pid process

1256 Explorer.EXE
1256 Explorer.EXE
Suspicious use of SendNotifyMessage 2 IoCs

Processes:

Explorer.EXE

pid process

1256 Explorer.EXE
1256 Explorer.EXE

pid	process
1328	tmp.exe
1328	tmp.exe
1328	tmp.exe
936	mstsc.exe
936	mstsc.exe

description	pid	process
Token: SeDebugPrivilege	1948	tmp.exe
Token: SeDebugPrivilege	1328	tmp.exe
Token: SeDebugPrivilege	936	mstsc.exe

pid	process
1256	Explorer.EXE
1256	Explorer.EXE

pid	process
1256	Explorer.EXE
1256	Explorer.EXE

Suspicious use of WriteProcessMemory 19 IoCs

Processes:

tmp.exeExplorer.EXEmstsc.exe

description	pid	process	target process
PID 1948 wrote to memory of 1160	1948	tmp.exe	tmp.exe
PID 1948 wrote to memory of 1160	1948	tmp.exe	tmp.exe
PID 1948 wrote to memory of 1160	1948	tmp.exe	tmp.exe
PID 1948 wrote to memory of 1160	1948	tmp.exe	tmp.exe
PID 1948 wrote to memory of 1328	1948	tmp.exe	tmp.exe
PID 1948 wrote to memory of 1328	1948	tmp.exe	tmp.exe
PID 1948 wrote to memory of 1328	1948	tmp.exe	tmp.exe
PID 1948 wrote to memory of 1328	1948	tmp.exe	tmp.exe
PID 1948 wrote to memory of 1328	1948	tmp.exe	tmp.exe
PID 1948 wrote to memory of 1328	1948	tmp.exe	tmp.exe
PID 1948 wrote to memory of 1328	1948	tmp.exe	tmp.exe
PID 1256 wrote to memory of 936	1256	Explorer.EXE	mstsc.exe
PID 1256 wrote to memory of 936	1256	Explorer.EXE	mstsc.exe
PID 1256 wrote to memory of 936	1256	Explorer.EXE	mstsc.exe
PID 1256 wrote to memory of 936	1256	Explorer.EXE	mstsc.exe
PID 936 wrote to memory of 1888	936	mstsc.exe	cmd.exe
PID 936 wrote to memory of 1888	936	mstsc.exe	cmd.exe
PID 936 wrote to memory of 1888	936	mstsc.exe	cmd.exe
PID 936 wrote to memory of 1888	936	mstsc.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:1256

C:\Users\Admin\AppData\Local\Temp\tmp.exe
"C:\Users\Admin\AppData\Local\Temp\tmp.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1948

C:\Users\Admin\AppData\Local\Temp\tmp.exe
"C:\Users\Admin\AppData\Local\Temp\tmp.exe"
3⤵
PID:1160

C:\Users\Admin\AppData\Local\Temp\tmp.exe
"C:\Users\Admin\AppData\Local\Temp\tmp.exe"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:1328

C:\Windows\SysWOW64\mstsc.exe
"C:\Windows\SysWOW64\mstsc.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:936

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\tmp.exe"
3⤵
- Deletes itself
PID:1888

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

memory/936-73-0x00000000005D0000-0x00000000006D4000-memory.dmp

Filesize
1.0MB

Download
memory/936-74-0x00000000000D0000-0x00000000000FF000-memory.dmp

Filesize
188KB

Download
memory/936-78-0x00000000000D0000-0x00000000000FF000-memory.dmp

Filesize
188KB

Download
memory/936-69-0x0000000000000000-mapping.dmp

Download
memory/936-76-0x0000000001F10000-0x0000000001FA3000-memory.dmp

Filesize
588KB

Download
memory/936-75-0x0000000002040000-0x0000000002343000-memory.dmp

Filesize
3.0MB

Download
memory/1256-68-0x0000000006D00000-0x0000000006EA9000-memory.dmp

Filesize
1.7MB

Download
memory/1256-77-0x0000000004050000-0x000000000410A000-memory.dmp

Filesize
744KB

Download
memory/1256-79-0x0000000004050000-0x000000000410A000-memory.dmp

Filesize
744KB

Download
memory/1328-61-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1328-63-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1328-64-0x000000000041F0D0-mapping.dmp

Download
memory/1328-66-0x0000000000990000-0x0000000000C93000-memory.dmp

Filesize
3.0MB

Download
memory/1328-67-0x00000000001D0000-0x00000000001E4000-memory.dmp

Filesize
80KB

Download
memory/1328-60-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1328-70-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1888-72-0x0000000000000000-mapping.dmp

Download
memory/1948-54-0x0000000000120000-0x00000000001AC000-memory.dmp

Filesize
560KB

Download
memory/1948-59-0x0000000001EF0000-0x0000000001F24000-memory.dmp

Filesize
208KB

Download
memory/1948-58-0x0000000004FB0000-0x000000000501C000-memory.dmp

Filesize
432KB

Download
memory/1948-57-0x0000000000380000-0x000000000038A000-memory.dmp

Filesize
40KB

Download
memory/1948-56-0x0000000000330000-0x000000000034C000-memory.dmp

Filesize
112KB

Download
memory/1948-55-0x00000000754A1000-0x00000000754A3000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix

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Downloads