formbook | a3da5c70fbe1fabaaec65ce52c8e76384e94a5937e9fd7e8515ba8a1a048b255

General

Target

a3da5c70fbe1fabaaec65ce52c8e76384e94a5937e9fd7e8515ba8a1a048b255.exe
Size

684KB
MD5

8371b3f4f53c2f7d2ac7fbc66719660b
SHA1

762d5507ae4c64ae0dc11098ea1f1ce5a5d8d28d
SHA256

a3da5c70fbe1fabaaec65ce52c8e76384e94a5937e9fd7e8515ba8a1a048b255
SHA512

b54474caee9cbed9910156e35a8b6b0ee6723971777e2c010d734637e42f104562b57609b20aadee66591d8d97f165d848260262c8e0d3118b3e44efbdf9ebe3

Score

10^/10

formbook n7ak rat spyware stealer suricata trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

n7ak

C2

http://www.kmresults.com/n7ak/

Decoy

modischoolcbse.com

theneverwinter.com

rszkjx-vps-hosting.website

fnihil.com

1pbet.com

nnowzscorrez.com

uaotgvjl.icu

starmapsqatar.com

ekisilani.com

extradeepsheets.com

jam-nins.com

buranly.com

orixentertainment.com

rawtech.energy

myol.guru

utex.club

jiapie.com

wowig.store

wweidlyyl.com

systaskautomation.com

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 3 IoCs

rat

Processes:

resource	yara_rule
behavioral2/memory/3336-117-0x0000000000000000-mapping.dmp	formbook
behavioral2/memory/3336-119-0x0000000010410000-0x000000001043E000-memory.dmp	formbook
behavioral2/memory/3704-126-0x0000000002950000-0x000000000297E000-memory.dmp	formbook

Suspicious use of SetThreadContext 2 IoCs

Processes:

mobsync.execscript.exe

description	pid	process	target process
PID 3336 set thread context of 1512	3336	mobsync.exe	Explorer.EXE
PID 3704 set thread context of 1512	3704	cscript.exe	Explorer.EXE

Modifies registry class 2 IoCs

Processes:

Explorer.EXE

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{4336a54d-038b-4685-ab02-99bb52d3fb8b}\Instance	Explorer.EXE
Key created	\REGISTRY\USER\S-1-5-21-2559286294-2439613352-4032193287-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance	Explorer.EXE

Suspicious behavior: EnumeratesProcesses 46 IoCs

Processes:

mobsync.execscript.exe

pid	process
3336	mobsync.exe
3336	mobsync.exe
3336	mobsync.exe
3336	mobsync.exe
3704	cscript.exe
3704	cscript.exe
3704	cscript.exe
3704	cscript.exe
3704	cscript.exe
3704	cscript.exe
3704	cscript.exe
3704	cscript.exe
3704	cscript.exe
3704	cscript.exe
3704	cscript.exe
3704	cscript.exe
3704	cscript.exe
3704	cscript.exe
3704	cscript.exe
3704	cscript.exe
3704	cscript.exe
3704	cscript.exe
3704	cscript.exe
3704	cscript.exe
3704	cscript.exe
3704	cscript.exe
3704	cscript.exe
3704	cscript.exe
3704	cscript.exe
3704	cscript.exe
3704	cscript.exe
3704	cscript.exe
3704	cscript.exe
3704	cscript.exe
3704	cscript.exe
3704	cscript.exe
3704	cscript.exe
3704	cscript.exe
3704	cscript.exe
3704	cscript.exe
3704	cscript.exe
3704	cscript.exe
3704	cscript.exe
3704	cscript.exe
3704	cscript.exe
3704	cscript.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

1512 Explorer.EXE
Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

mobsync.execscript.exe

pid process

3336 mobsync.exe
3336 mobsync.exe
3336 mobsync.exe
3704 cscript.exe
3704 cscript.exe

pid	process
1512	Explorer.EXE

Suspicious use of AdjustPrivilegeToken 8 IoCs

Processes:

mobsync.execscript.exeExplorer.EXE

description	pid	process
Token: SeDebugPrivilege	3336	mobsync.exe
Token: SeDebugPrivilege	3704	cscript.exe
Token: SeShutdownPrivilege	1512	Explorer.EXE
Token: SeCreatePagefilePrivilege	1512	Explorer.EXE
Token: SeShutdownPrivilege	1512	Explorer.EXE
Token: SeCreatePagefilePrivilege	1512	Explorer.EXE
Token: SeShutdownPrivilege	1512	Explorer.EXE
Token: SeCreatePagefilePrivilege	1512	Explorer.EXE

Suspicious use of FindShellTrayWindow 8 IoCs

Processes:

Explorer.EXE

pid process

1512 Explorer.EXE
1512 Explorer.EXE
1512 Explorer.EXE
1512 Explorer.EXE
1512 Explorer.EXE
1512 Explorer.EXE
1512 Explorer.EXE
1512 Explorer.EXE

pid	process
1512	Explorer.EXE
1512	Explorer.EXE
1512	Explorer.EXE
1512	Explorer.EXE
1512	Explorer.EXE
1512	Explorer.EXE
1512	Explorer.EXE
1512	Explorer.EXE

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

a3da5c70fbe1fabaaec65ce52c8e76384e94a5937e9fd7e8515ba8a1a048b255.exeExplorer.EXEcscript.exe

description	pid	process	target process
PID 3968 wrote to memory of 3336	3968	a3da5c70fbe1fabaaec65ce52c8e76384e94a5937e9fd7e8515ba8a1a048b255.exe	mobsync.exe
PID 3968 wrote to memory of 3336	3968	a3da5c70fbe1fabaaec65ce52c8e76384e94a5937e9fd7e8515ba8a1a048b255.exe	mobsync.exe
PID 3968 wrote to memory of 3336	3968	a3da5c70fbe1fabaaec65ce52c8e76384e94a5937e9fd7e8515ba8a1a048b255.exe	mobsync.exe
PID 3968 wrote to memory of 3336	3968	a3da5c70fbe1fabaaec65ce52c8e76384e94a5937e9fd7e8515ba8a1a048b255.exe	mobsync.exe
PID 3968 wrote to memory of 3336	3968	a3da5c70fbe1fabaaec65ce52c8e76384e94a5937e9fd7e8515ba8a1a048b255.exe	mobsync.exe
PID 3968 wrote to memory of 3336	3968	a3da5c70fbe1fabaaec65ce52c8e76384e94a5937e9fd7e8515ba8a1a048b255.exe	mobsync.exe
PID 1512 wrote to memory of 3704	1512	Explorer.EXE	cscript.exe
PID 1512 wrote to memory of 3704	1512	Explorer.EXE	cscript.exe
PID 1512 wrote to memory of 3704	1512	Explorer.EXE	cscript.exe
PID 3704 wrote to memory of 524	3704	cscript.exe	cmd.exe
PID 3704 wrote to memory of 524	3704	cscript.exe	cmd.exe
PID 3704 wrote to memory of 524	3704	cscript.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Modifies registry class
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:1512

C:\Users\Admin\AppData\Local\Temp\a3da5c70fbe1fabaaec65ce52c8e76384e94a5937e9fd7e8515ba8a1a048b255.exe
"C:\Users\Admin\AppData\Local\Temp\a3da5c70fbe1fabaaec65ce52c8e76384e94a5937e9fd7e8515ba8a1a048b255.exe"
2⤵
- Suspicious use of WriteProcessMemory
PID:3968

C:\Windows\SysWOW64\mobsync.exe
C:\Windows\System32\mobsync.exe
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:3336

C:\Windows\SysWOW64\cscript.exe
"C:\Windows\SysWOW64\cscript.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3704

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Windows\SysWOW64\mobsync.exe"
3⤵
PID:524

Network

MITRE ATT&CK Matrix

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Downloads

memory/524-124-0x0000000000000000-mapping.dmp

Download
memory/1512-122-0x0000000005070000-0x000000000520F000-memory.dmp

Filesize
1.6MB

Download
memory/1512-129-0x0000000000A20000-0x0000000000ABE000-memory.dmp

Filesize
632KB

Download
memory/3336-120-0x00000000050E0000-0x0000000005400000-memory.dmp

Filesize
3.1MB

Download
memory/3336-118-0x0000000002FD0000-0x0000000002FD1000-memory.dmp

Filesize
4KB

Download
memory/3336-121-0x0000000003760000-0x0000000003774000-memory.dmp

Filesize
80KB

Download
memory/3336-119-0x0000000010410000-0x000000001043E000-memory.dmp

Filesize
184KB

Download
memory/3336-117-0x0000000000000000-mapping.dmp

Download
memory/3704-123-0x0000000000000000-mapping.dmp

Download
memory/3704-125-0x00000000008E0000-0x0000000000907000-memory.dmp

Filesize
156KB

Download
memory/3704-126-0x0000000002950000-0x000000000297E000-memory.dmp

Filesize
184KB

Download
memory/3704-127-0x00000000044E0000-0x0000000004800000-memory.dmp

Filesize
3.1MB

Download
memory/3704-128-0x00000000043E0000-0x0000000004473000-memory.dmp

Filesize
588KB

Download
memory/3968-115-0x0000000000770000-0x0000000000771000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix

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Downloads