formbook | 17860814e8bd76c17950f886ad9de46cea5d891c4144f7e47f1a64d990e152c1

General

Target

doc094.exe
Size

345KB
MD5

aa4728fc8d920e596570904225ffaeca
SHA1

242c0f565ef343f4390b3090fcd1480ae07d50c1
SHA256

aa3a6c0efb81498bfda5ebc1319154af99114b3184a9dffd5924e778b25b1ab9
SHA512

b145c454ab49f26194ec3d4a6ab0cb4ec4208aee1ea624d5d48473d858e41a008c2cfd0778e9aaac79f83d4ec9c62d5e0a10c7c8b879a126237c041d2d47ef41

Score

10^/10

formbook s5l persistence rat spyware stealer suricata trojan

Malware Config

Extracted

Family

formbook

Version

3.9

Campaign

s5l

Decoy

greenstock.info

laurajaneaesthetics.com

817comm.com

dbprimery.com

slzu-vxtx9.biz

covetpro.com

50.ink

weick.email

88717888.com

tongyue0423.com

anchorsky.com

horapatarot.com

cadillacforless.com

primesupplyvintage.com

torchinstant.win

thebrandishere.com

www-69677.com

savestj.com

tommydad.com

xigjailbreak.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 4 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/1732-63-0x0000000000400000-0x000000000042A000-memory.dmp	formbook
behavioral1/memory/1732-64-0x000000000041B6E0-mapping.dmp	formbook
behavioral1/memory/1732-66-0x0000000000400000-0x000000000042A000-memory.dmp	formbook
behavioral1/memory/1764-73-0x00000000000C0000-0x00000000000EA000-memory.dmp	formbook

Adds policy Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

wininit.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	wininit.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\DRWTJREHF8 = "C:\\Program Files (x86)\\Kmrt8cnup\\servicesmffxxh-x.exe"	wininit.exe

Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

760 cmd.exe

pid	process
760	cmd.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

doc094.exedoc094.exewininit.exe

description	pid	process	target process
PID 1668 set thread context of 1732	1668	doc094.exe	doc094.exe
PID 1732 set thread context of 1272	1732	doc094.exe	Explorer.EXE
PID 1764 set thread context of 1272	1764	wininit.exe	Explorer.EXE

Drops file in Program Files directory 1 IoCs

Processes:

wininit.exe

description ioc process

File opened for modification C:\Program Files (x86)\Kmrt8cnup\servicesmffxxh-x.exe wininit.exe

description	ioc	process
File opened for modification	C:\Program Files (x86)\Kmrt8cnup\servicesmffxxh-x.exe	wininit.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

wininit.exe

description	ioc	process
Key created	\Registry\User\S-1-5-21-1819626980-2277161760-1023733287-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	wininit.exe

Suspicious behavior: EnumeratesProcesses 37 IoCs

Processes:

doc094.exedoc094.exewininit.exe

pid	process
1668	doc094.exe
1668	doc094.exe
1668	doc094.exe
1668	doc094.exe
1668	doc094.exe
1668	doc094.exe
1668	doc094.exe
1668	doc094.exe
1668	doc094.exe
1668	doc094.exe
1668	doc094.exe
1668	doc094.exe
1668	doc094.exe
1668	doc094.exe
1668	doc094.exe
1668	doc094.exe
1732	doc094.exe
1732	doc094.exe
1764	wininit.exe
1764	wininit.exe
1764	wininit.exe
1764	wininit.exe
1764	wininit.exe
1764	wininit.exe
1764	wininit.exe
1764	wininit.exe
1764	wininit.exe
1764	wininit.exe
1764	wininit.exe
1764	wininit.exe
1764	wininit.exe
1764	wininit.exe
1764	wininit.exe
1764	wininit.exe
1764	wininit.exe
1764	wininit.exe
1764	wininit.exe

Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

doc094.exewininit.exe

pid process

1732 doc094.exe
1732 doc094.exe
1732 doc094.exe
1764 wininit.exe
1764 wininit.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

doc094.exedoc094.exewininit.exe

description pid process

Token: SeDebugPrivilege 1668 doc094.exe
Token: SeDebugPrivilege 1732 doc094.exe
Token: SeDebugPrivilege 1764 wininit.exe
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

Explorer.EXE

pid process

1272 Explorer.EXE
1272 Explorer.EXE
Suspicious use of SendNotifyMessage 2 IoCs

Processes:

Explorer.EXE

pid process

1272 Explorer.EXE
1272 Explorer.EXE

pid	process
1732	doc094.exe
1732	doc094.exe
1732	doc094.exe
1764	wininit.exe
1764	wininit.exe

description	pid	process
Token: SeDebugPrivilege	1668	doc094.exe
Token: SeDebugPrivilege	1732	doc094.exe
Token: SeDebugPrivilege	1764	wininit.exe

pid	process
1272	Explorer.EXE
1272	Explorer.EXE

pid	process
1272	Explorer.EXE
1272	Explorer.EXE

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

doc094.exeExplorer.EXEwininit.exe

description	pid	process	target process
PID 1668 wrote to memory of 1732	1668	doc094.exe	doc094.exe
PID 1668 wrote to memory of 1732	1668	doc094.exe	doc094.exe
PID 1668 wrote to memory of 1732	1668	doc094.exe	doc094.exe
PID 1668 wrote to memory of 1732	1668	doc094.exe	doc094.exe
PID 1668 wrote to memory of 1732	1668	doc094.exe	doc094.exe
PID 1668 wrote to memory of 1732	1668	doc094.exe	doc094.exe
PID 1668 wrote to memory of 1732	1668	doc094.exe	doc094.exe
PID 1272 wrote to memory of 1764	1272	Explorer.EXE	wininit.exe
PID 1272 wrote to memory of 1764	1272	Explorer.EXE	wininit.exe
PID 1272 wrote to memory of 1764	1272	Explorer.EXE	wininit.exe
PID 1272 wrote to memory of 1764	1272	Explorer.EXE	wininit.exe
PID 1764 wrote to memory of 760	1764	wininit.exe	cmd.exe
PID 1764 wrote to memory of 760	1764	wininit.exe	cmd.exe
PID 1764 wrote to memory of 760	1764	wininit.exe	cmd.exe
PID 1764 wrote to memory of 760	1764	wininit.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:1272

C:\Users\Admin\AppData\Local\Temp\doc094.exe
"C:\Users\Admin\AppData\Local\Temp\doc094.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1668

C:\Users\Admin\AppData\Local\Temp\doc094.exe
"C:\Users\Admin\AppData\Local\Temp\doc094.exe"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:1732

C:\Windows\SysWOW64\wininit.exe
"C:\Windows\SysWOW64\wininit.exe"
2⤵
- Adds policy Run key to start application
- Suspicious use of SetThreadContext
- Drops file in Program Files directory
- Modifies Internet Explorer settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1764

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\doc094.exe"
3⤵
- Deletes itself
PID:760

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\JN052U35\JN0logim.jpeg
Filesize
63KB

MD5
8bcb3ab4265e36dab505fb69c96a06b9

SHA1
bb745708e21f8ad2964677b050037a33afee0001

SHA256
08844b2d21a3816825def3b15038b83db77b8f09f53dd640db1e8591efe73d7b

SHA512
e54cf6457f3ccb998eebed446c653a893f6155dd5a9193f3de05280fedd8d79abc61f993327ce50d46ab4df1d4564ad6c23778320afc5a8e30af30498ba2cf16

Download Submit
C:\Users\Admin\AppData\Roaming\JN052U35\JN0logri.ini
Filesize
40B

MD5
d63a82e5d81e02e399090af26db0b9cb

SHA1
91d0014c8f54743bba141fd60c9d963f869d76c9

SHA256
eaece2eba6310253249603033c744dd5914089b0bb26bde6685ec9813611baae

SHA512
38afb05016d8f3c69d246321573997aaac8a51c34e61749a02bf5e8b2b56b94d9544d65801511044e1495906a86dc2100f2e20ff4fcbed09e01904cc780fdbad

Download Submit
C:\Users\Admin\AppData\Roaming\JN052U35\JN0logrv.ini
Filesize
40B

MD5
ba3b6bc807d4f76794c4b81b09bb9ba5

SHA1
24cb89501f0212ff3095ecc0aba97dd563718fb1

SHA256
6eebf968962745b2e9de2ca969af7c424916d4e3fe3cc0bb9b3d414abfce9507

SHA512
ecd07e601fc9e3cfc39addd7bd6f3d7f7ff3253afb40bf536e9eaac5a4c243e5ec40fbfd7b216cb0ea29f2517419601e335e33ba19dea4a46f65e38694d465bf

Download Submit
memory/760-71-0x0000000000000000-mapping.dmp

Download
memory/1272-76-0x0000000005ED0000-0x0000000005F6C000-memory.dmp

Filesize
624KB

Download
memory/1272-69-0x0000000006FC0000-0x000000000714B000-memory.dmp

Filesize
1.5MB

Download
memory/1668-54-0x0000000000950000-0x00000000009AC000-memory.dmp

Filesize
368KB

Download
memory/1668-55-0x0000000075BA1000-0x0000000075BA3000-memory.dmp

Filesize
8KB

Download
memory/1668-56-0x0000000000710000-0x0000000000718000-memory.dmp

Filesize
32KB

Download
memory/1668-57-0x0000000000780000-0x00000000007B8000-memory.dmp

Filesize
224KB

Download
memory/1668-58-0x00000000007E0000-0x00000000007F6000-memory.dmp

Filesize
88KB

Download
memory/1668-59-0x0000000000940000-0x0000000000948000-memory.dmp

Filesize
32KB

Download
memory/1732-68-0x0000000000180000-0x0000000000194000-memory.dmp

Filesize
80KB

Download
memory/1732-67-0x00000000009B0000-0x0000000000CB3000-memory.dmp

Filesize
3.0MB

Download
memory/1732-66-0x0000000000400000-0x000000000042A000-memory.dmp

Filesize
168KB

Download
memory/1732-64-0x000000000041B6E0-mapping.dmp

Download
memory/1732-63-0x0000000000400000-0x000000000042A000-memory.dmp

Filesize
168KB

Download
memory/1732-61-0x0000000000400000-0x000000000042A000-memory.dmp

Filesize
168KB

Download
memory/1732-60-0x0000000000400000-0x000000000042A000-memory.dmp

Filesize
168KB

Download
memory/1764-70-0x0000000000000000-mapping.dmp

Download
memory/1764-72-0x0000000000710000-0x000000000072A000-memory.dmp

Filesize
104KB

Download
memory/1764-73-0x00000000000C0000-0x00000000000EA000-memory.dmp

Filesize
168KB

Download
memory/1764-74-0x0000000001FE0000-0x00000000022E3000-memory.dmp

Filesize
3.0MB

Download
memory/1764-75-0x0000000000470000-0x0000000000503000-memory.dmp

Filesize
588KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads