formbook | 5b8a341d18803152d2be2af3313830091764943deaad2e391907c0b23e521e50

General

Target

Salary.exe
Size

301KB
MD5

cddc72c9292768f8719c1e5127a9997d
SHA1

5ae294116d27d67b2c3cee4b0b1b79ecbd25d582
SHA256

f3f3cda95f4d655f189381268676beef7ab70ed8355ff178abcad416c71adb22
SHA512

240c7a82c7b848f59aef3e09c01eca8d97c853ae7bf1270dea844835876019d8ee9eac83c5d7bc2ad56bdddd8853c6877a3a5c79ec0ba504eb4e8cb1200a49c1

Score

10^/10

formbook g8u persistence rat rezer0 spyware stealer suricata trojan

Malware Config

Extracted

Family

formbook

Version

4.0

Campaign

g8u

Decoy

stuition.com

mj-sculpture.com

cannatainmentevents.com

dianjintang.com

rmlusitania.info

effet-spiruline.com

flatheme.com

supergaminator-vip.com

craftyourmagic.com

lakai.ltd

electionshawaii.com

iqpdct.com

thebestfourstarhotels.com

satoshiceo.com

saintmartiner.com

brothersmarinetoronto.com

citicoin.online

scentsationalsniffers.com

hellonighbourgameees.com

displayonline-france.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/2020-60-0x0000000000400000-0x000000000042D000-memory.dmp	formbook
behavioral1/memory/2020-61-0x000000000041E370-mapping.dmp	formbook
behavioral1/memory/2020-66-0x0000000000400000-0x000000000042D000-memory.dmp	formbook
behavioral1/memory/908-72-0x0000000000100000-0x000000000012D000-memory.dmp	formbook

ReZer0 packer 1 IoCs

Detects ReZer0, a packer with multiple versions used in various campaigns.

rezer0

Processes:

resource	yara_rule
behavioral1/memory/1084-56-0x0000000000730000-0x000000000076A000-memory.dmp	rezer0

Adds policy Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

systray.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	systray.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\XZ7DU85H52 = "C:\\Program Files (x86)\\Ufrdh6ti\\taskhost1b6hzl5.exe"	systray.exe

Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

1072 cmd.exe

pid	process
1072	cmd.exe

Suspicious use of SetThreadContext 4 IoCs

Processes:

Salary.exeSalary.exesystray.exe

description	pid	process	target process
PID 1084 set thread context of 2020	1084	Salary.exe	Salary.exe
PID 2020 set thread context of 1280	2020	Salary.exe	Explorer.EXE
PID 2020 set thread context of 1280	2020	Salary.exe	Explorer.EXE
PID 908 set thread context of 1280	908	systray.exe	Explorer.EXE

Drops file in Program Files directory 1 IoCs

Processes:

systray.exe

description ioc process

File opened for modification C:\Program Files (x86)\Ufrdh6ti\taskhost1b6hzl5.exe systray.exe

description	ioc	process
File opened for modification	C:\Program Files (x86)\Ufrdh6ti\taskhost1b6hzl5.exe	systray.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

systray.exe

description	ioc	process
Key created	\Registry\User\S-1-5-21-2277218442-1199762539-2004043321-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	systray.exe

Suspicious behavior: EnumeratesProcesses 12 IoCs

Processes:

Salary.exeSalary.exesystray.exe

pid	process
1084	Salary.exe
2020	Salary.exe
2020	Salary.exe
2020	Salary.exe
908	systray.exe
908	systray.exe
908	systray.exe
908	systray.exe
908	systray.exe
908	systray.exe
908	systray.exe
908	systray.exe

Suspicious behavior: MapViewOfSection 6 IoCs

Processes:

Salary.exesystray.exe

pid process

2020 Salary.exe
2020 Salary.exe
2020 Salary.exe
2020 Salary.exe
908 systray.exe
908 systray.exe

pid	process
2020	Salary.exe
2020	Salary.exe
2020	Salary.exe
2020	Salary.exe
908	systray.exe
908	systray.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

Salary.exeSalary.exesystray.exeExplorer.EXE

description	pid	process
Token: SeDebugPrivilege	1084	Salary.exe
Token: SeDebugPrivilege	2020	Salary.exe
Token: SeDebugPrivilege	908	systray.exe
Token: SeShutdownPrivilege	1280	Explorer.EXE

Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

Explorer.EXE

pid process

1280 Explorer.EXE
1280 Explorer.EXE
Suspicious use of SendNotifyMessage 2 IoCs

Processes:

Explorer.EXE

pid process

1280 Explorer.EXE
1280 Explorer.EXE

pid	process
1280	Explorer.EXE
1280	Explorer.EXE

pid	process
1280	Explorer.EXE
1280	Explorer.EXE

Suspicious use of WriteProcessMemory 19 IoCs

Processes:

Salary.exeExplorer.EXEsystray.exe

description	pid	process	target process
PID 1084 wrote to memory of 2016	1084	Salary.exe	Salary.exe
PID 1084 wrote to memory of 2016	1084	Salary.exe	Salary.exe
PID 1084 wrote to memory of 2016	1084	Salary.exe	Salary.exe
PID 1084 wrote to memory of 2016	1084	Salary.exe	Salary.exe
PID 1084 wrote to memory of 2020	1084	Salary.exe	Salary.exe
PID 1084 wrote to memory of 2020	1084	Salary.exe	Salary.exe
PID 1084 wrote to memory of 2020	1084	Salary.exe	Salary.exe
PID 1084 wrote to memory of 2020	1084	Salary.exe	Salary.exe
PID 1084 wrote to memory of 2020	1084	Salary.exe	Salary.exe
PID 1084 wrote to memory of 2020	1084	Salary.exe	Salary.exe
PID 1084 wrote to memory of 2020	1084	Salary.exe	Salary.exe
PID 1280 wrote to memory of 908	1280	Explorer.EXE	systray.exe
PID 1280 wrote to memory of 908	1280	Explorer.EXE	systray.exe
PID 1280 wrote to memory of 908	1280	Explorer.EXE	systray.exe
PID 1280 wrote to memory of 908	1280	Explorer.EXE	systray.exe
PID 908 wrote to memory of 1072	908	systray.exe	cmd.exe
PID 908 wrote to memory of 1072	908	systray.exe	cmd.exe
PID 908 wrote to memory of 1072	908	systray.exe	cmd.exe
PID 908 wrote to memory of 1072	908	systray.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1280

C:\Users\Admin\AppData\Local\Temp\Salary.exe
"C:\Users\Admin\AppData\Local\Temp\Salary.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1084

C:\Users\Admin\AppData\Local\Temp\Salary.exe
"{path}"
3⤵
PID:2016

C:\Users\Admin\AppData\Local\Temp\Salary.exe
"{path}"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:2020

C:\Windows\SysWOW64\autofmt.exe
"C:\Windows\SysWOW64\autofmt.exe"
2⤵
PID:916

C:\Windows\SysWOW64\systray.exe
"C:\Windows\SysWOW64\systray.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:908

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\Salary.exe"
3⤵
- Deletes itself
PID:1072

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

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Downloads

memory/908-74-0x0000000000840000-0x00000000008D3000-memory.dmp

Filesize
588KB

Download
memory/908-76-0x0000000075FC1000-0x0000000075FC3000-memory.dmp

Filesize
8KB

Download
memory/908-69-0x0000000000000000-mapping.dmp

Download
memory/908-73-0x0000000001ED0000-0x00000000021D3000-memory.dmp

Filesize
3.0MB

Download
memory/908-72-0x0000000000100000-0x000000000012D000-memory.dmp

Filesize
180KB

Download
memory/908-71-0x0000000000AC0000-0x0000000000AC5000-memory.dmp

Filesize
20KB

Download
memory/1072-70-0x0000000000000000-mapping.dmp

Download
memory/1084-55-0x0000000000260000-0x0000000000270000-memory.dmp

Filesize
64KB

Download
memory/1084-56-0x0000000000730000-0x000000000076A000-memory.dmp

Filesize
232KB

Download
memory/1084-54-0x0000000000200000-0x0000000000252000-memory.dmp

Filesize
328KB

Download
memory/1280-75-0x0000000006AE0000-0x0000000006C21000-memory.dmp

Filesize
1.3MB

Download
memory/1280-65-0x00000000049B0000-0x0000000004A6D000-memory.dmp

Filesize
756KB

Download
memory/1280-68-0x0000000004DA0000-0x0000000004E5A000-memory.dmp

Filesize
744KB

Download
memory/2020-60-0x0000000000400000-0x000000000042D000-memory.dmp

Filesize
180KB

Download
memory/2020-67-0x00000000001E0000-0x00000000001F4000-memory.dmp

Filesize
80KB

Download
memory/2020-66-0x0000000000400000-0x000000000042D000-memory.dmp

Filesize
180KB

Download
memory/2020-64-0x0000000000190000-0x00000000001A4000-memory.dmp

Filesize
80KB

Download
memory/2020-63-0x00000000009C0000-0x0000000000CC3000-memory.dmp

Filesize
3.0MB

Download
memory/2020-61-0x000000000041E370-mapping.dmp

Download
memory/2020-58-0x0000000000400000-0x000000000042D000-memory.dmp

Filesize
180KB

Download
memory/2020-57-0x0000000000400000-0x000000000042D000-memory.dmp

Filesize
180KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads