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 4 IoCs

rat

Processes:

resource	yara_rule
behavioral2/memory/2696-136-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/2696-138-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/5072-145-0x0000000001000000-0x000000000102F000-memory.dmp	formbook
behavioral2/memory/5072-149-0x0000000001000000-0x000000000102F000-memory.dmp	formbook

Suspicious use of SetThreadContext 3 IoCs

Processes:

tmp.exetmp.execmstp.exe

description	pid	process	target process
PID 1124 set thread context of 2696	1124	tmp.exe	tmp.exe
PID 2696 set thread context of 3132	2696	tmp.exe	Explorer.EXE
PID 5072 set thread context of 3132	5072	cmstp.exe	Explorer.EXE

Suspicious behavior: EnumeratesProcesses 40 IoCs

Processes:

tmp.execmstp.exe

pid	process
2696	tmp.exe
2696	tmp.exe
2696	tmp.exe
2696	tmp.exe
5072	cmstp.exe
5072	cmstp.exe
5072	cmstp.exe
5072	cmstp.exe
5072	cmstp.exe
5072	cmstp.exe
5072	cmstp.exe
5072	cmstp.exe
5072	cmstp.exe
5072	cmstp.exe
5072	cmstp.exe
5072	cmstp.exe
5072	cmstp.exe
5072	cmstp.exe
5072	cmstp.exe
5072	cmstp.exe
5072	cmstp.exe
5072	cmstp.exe
5072	cmstp.exe
5072	cmstp.exe
5072	cmstp.exe
5072	cmstp.exe
5072	cmstp.exe
5072	cmstp.exe
5072	cmstp.exe
5072	cmstp.exe
5072	cmstp.exe
5072	cmstp.exe
5072	cmstp.exe
5072	cmstp.exe
5072	cmstp.exe
5072	cmstp.exe
5072	cmstp.exe
5072	cmstp.exe
5072	cmstp.exe
5072	cmstp.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

3132 Explorer.EXE
Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

tmp.execmstp.exe

pid process

2696 tmp.exe
2696 tmp.exe
2696 tmp.exe
5072 cmstp.exe
5072 cmstp.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

tmp.execmstp.exe

description pid process

Token: SeDebugPrivilege 2696 tmp.exe
Token: SeDebugPrivilege 5072 cmstp.exe

pid	process
3132	Explorer.EXE

description	pid	process
Token: SeDebugPrivilege	2696	tmp.exe
Token: SeDebugPrivilege	5072	cmstp.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

tmp.exeExplorer.EXEcmstp.exe

description	pid	process	target process
PID 1124 wrote to memory of 2696	1124	tmp.exe	tmp.exe
PID 1124 wrote to memory of 2696	1124	tmp.exe	tmp.exe
PID 1124 wrote to memory of 2696	1124	tmp.exe	tmp.exe
PID 1124 wrote to memory of 2696	1124	tmp.exe	tmp.exe
PID 1124 wrote to memory of 2696	1124	tmp.exe	tmp.exe
PID 1124 wrote to memory of 2696	1124	tmp.exe	tmp.exe
PID 3132 wrote to memory of 5072	3132	Explorer.EXE	cmstp.exe
PID 3132 wrote to memory of 5072	3132	Explorer.EXE	cmstp.exe
PID 3132 wrote to memory of 5072	3132	Explorer.EXE	cmstp.exe
PID 5072 wrote to memory of 2476	5072	cmstp.exe	cmd.exe
PID 5072 wrote to memory of 2476	5072	cmstp.exe	cmd.exe
PID 5072 wrote to memory of 2476	5072	cmstp.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:3132

C:\Users\Admin\AppData\Local\Temp\tmp.exe
"C:\Users\Admin\AppData\Local\Temp\tmp.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1124

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:2696

C:\Windows\SysWOW64\cmstp.exe
"C:\Windows\SysWOW64\cmstp.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:5072

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\tmp.exe"
3⤵
PID:2476

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

memory/1124-131-0x00000000052F0000-0x0000000005894000-memory.dmp

Filesize
5.6MB

Download
memory/1124-132-0x0000000004E20000-0x0000000004EB2000-memory.dmp

Filesize
584KB

Download
memory/1124-133-0x0000000004E10000-0x0000000004E1A000-memory.dmp

Filesize
40KB

Download
memory/1124-134-0x00000000087D0000-0x000000000886C000-memory.dmp

Filesize
624KB

Download
memory/1124-130-0x00000000003E0000-0x000000000046C000-memory.dmp

Filesize
560KB

Download
memory/2476-143-0x0000000000000000-mapping.dmp

Download
memory/2696-135-0x0000000000000000-mapping.dmp

Download
memory/2696-136-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2696-138-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2696-139-0x0000000001880000-0x0000000001BCA000-memory.dmp

Filesize
3.3MB

Download
memory/2696-140-0x0000000001520000-0x0000000001534000-memory.dmp

Filesize
80KB

Download
memory/3132-141-0x00000000083F0000-0x000000000852E000-memory.dmp

Filesize
1.2MB

Download
memory/3132-148-0x0000000008860000-0x00000000089E8000-memory.dmp

Filesize
1.5MB

Download
memory/3132-150-0x0000000008860000-0x00000000089E8000-memory.dmp

Filesize
1.5MB

Download
memory/5072-142-0x0000000000000000-mapping.dmp

Download
memory/5072-144-0x0000000000770000-0x0000000000786000-memory.dmp

Filesize
88KB

Download
memory/5072-145-0x0000000001000000-0x000000000102F000-memory.dmp

Filesize
188KB

Download
memory/5072-146-0x0000000002E70000-0x00000000031BA000-memory.dmp

Filesize
3.3MB

Download
memory/5072-147-0x0000000002D80000-0x0000000002E13000-memory.dmp

Filesize
588KB

Download
memory/5072-149-0x0000000001000000-0x000000000102F000-memory.dmp

Filesize
188KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads