formbook | bc3a9a02daa782f52ec830c499b4c6b262a462f5f6c3f05dce1bfe14183be54e

General

Target

Salary.exe
Size

352KB
MD5

6d5f3175c300da6ea8a6875a4682edd9
SHA1

ebf2ab3c7fa3cd6f3dcb16e8d1f8faedb16bd7e6
SHA256

4f5081f499127a975be464ff8bb659d88a455cf17da0579c20732097507b6226
SHA512

5dcddce714ce32048466d51d59fcfa84e2949ae01f3b8f0add3f871e03b80f964649963f51ea62bff190bb16fdb0e31bf3802f3fa33d4fc5b1c604da9399720d

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 3 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/1176-60-0x0000000000400000-0x000000000042D000-memory.dmp	formbook
behavioral1/memory/1176-61-0x000000000041E370-mapping.dmp	formbook
behavioral1/memory/1724-69-0x00000000000E0000-0x000000000010D000-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/1120-56-0x00000000008C0000-0x00000000008FA000-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:

mstsc.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	mstsc.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\JX8XKZIXF4P = "C:\\Program Files (x86)\\Iobil\\userazz.exe"	mstsc.exe

Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

904 cmd.exe

pid	process
904	cmd.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

Salary.exeSalary.exemstsc.exe

description	pid	process	target process
PID 1120 set thread context of 1176	1120	Salary.exe	Salary.exe
PID 1176 set thread context of 1292	1176	Salary.exe	Explorer.EXE
PID 1724 set thread context of 1292	1724	mstsc.exe	Explorer.EXE

Drops file in Program Files directory 1 IoCs

Processes:

mstsc.exe

description ioc process

File opened for modification C:\Program Files (x86)\Iobil\userazz.exe mstsc.exe

description	ioc	process
File opened for modification	C:\Program Files (x86)\Iobil\userazz.exe	mstsc.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

mstsc.exe

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

Suspicious behavior: EnumeratesProcesses 18 IoCs

Processes:

Salary.exemstsc.exe

pid	process
1176	Salary.exe
1176	Salary.exe
1724	mstsc.exe
1724	mstsc.exe
1724	mstsc.exe
1724	mstsc.exe
1724	mstsc.exe
1724	mstsc.exe
1724	mstsc.exe
1724	mstsc.exe
1724	mstsc.exe
1724	mstsc.exe
1724	mstsc.exe
1724	mstsc.exe
1724	mstsc.exe
1724	mstsc.exe
1724	mstsc.exe
1724	mstsc.exe

Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

Salary.exemstsc.exe

pid process

1176 Salary.exe
1176 Salary.exe
1176 Salary.exe
1724 mstsc.exe
1724 mstsc.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

Salary.exemstsc.exeExplorer.EXE

description pid process

Token: SeDebugPrivilege 1176 Salary.exe
Token: SeDebugPrivilege 1724 mstsc.exe
Token: SeShutdownPrivilege 1292 Explorer.EXE
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

Explorer.EXE

pid process

1292 Explorer.EXE
1292 Explorer.EXE
Suspicious use of SendNotifyMessage 2 IoCs

Processes:

Explorer.EXE

pid process

1292 Explorer.EXE
1292 Explorer.EXE

description	pid	process
Token: SeDebugPrivilege	1176	Salary.exe
Token: SeDebugPrivilege	1724	mstsc.exe
Token: SeShutdownPrivilege	1292	Explorer.EXE

pid	process
1292	Explorer.EXE
1292	Explorer.EXE

pid	process
1292	Explorer.EXE
1292	Explorer.EXE

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

Salary.exeExplorer.EXEmstsc.exe

description	pid	process	target process
PID 1120 wrote to memory of 1176	1120	Salary.exe	Salary.exe
PID 1120 wrote to memory of 1176	1120	Salary.exe	Salary.exe
PID 1120 wrote to memory of 1176	1120	Salary.exe	Salary.exe
PID 1120 wrote to memory of 1176	1120	Salary.exe	Salary.exe
PID 1120 wrote to memory of 1176	1120	Salary.exe	Salary.exe
PID 1120 wrote to memory of 1176	1120	Salary.exe	Salary.exe
PID 1120 wrote to memory of 1176	1120	Salary.exe	Salary.exe
PID 1292 wrote to memory of 1724	1292	Explorer.EXE	mstsc.exe
PID 1292 wrote to memory of 1724	1292	Explorer.EXE	mstsc.exe
PID 1292 wrote to memory of 1724	1292	Explorer.EXE	mstsc.exe
PID 1292 wrote to memory of 1724	1292	Explorer.EXE	mstsc.exe
PID 1724 wrote to memory of 904	1724	mstsc.exe	cmd.exe
PID 1724 wrote to memory of 904	1724	mstsc.exe	cmd.exe
PID 1724 wrote to memory of 904	1724	mstsc.exe	cmd.exe
PID 1724 wrote to memory of 904	1724	mstsc.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:1292

C:\Users\Admin\AppData\Local\Temp\Salary.exe
"C:\Users\Admin\AppData\Local\Temp\Salary.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1120

C:\Users\Admin\AppData\Local\Temp\Salary.exe
"C:\Users\Admin\AppData\Local\Temp\Salary.exe"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:1176

C:\Windows\SysWOW64\mstsc.exe
"C:\Windows\SysWOW64\mstsc.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:1724

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\Salary.exe"
3⤵
- Deletes itself
PID:904

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\3M7QRD2U\3M7logim.jpeg
Filesize
60KB

MD5
700556da1b3f3501e3d0158564e2f1f9

SHA1
ffe102a41b1dd3f33aa45747f6131a390d20549a

SHA256
6668d470e9a89637b6d7196b0e0298522ac5878db57509c10eed1c15e3bc22c7

SHA512
7446eba784460cb198e5fa4ba697fc987f8839213d42e02ee328029e2f232e1aba82d852384a19df8567d5f113b067308f8a16da1e6bef649c850c4f43122f1b

Download Submit
C:\Users\Admin\AppData\Roaming\3M7QRD2U\3M7logri.ini
Filesize
40B

MD5
d63a82e5d81e02e399090af26db0b9cb

SHA1
91d0014c8f54743bba141fd60c9d963f869d76c9

SHA256
eaece2eba6310253249603033c744dd5914089b0bb26bde6685ec9813611baae

SHA512
38afb05016d8f3c69d246321573997aaac8a51c34e61749a02bf5e8b2b56b94d9544d65801511044e1495906a86dc2100f2e20ff4fcbed09e01904cc780fdbad

Download Submit
C:\Users\Admin\AppData\Roaming\3M7QRD2U\3M7logrv.ini
Filesize
40B

MD5
ba3b6bc807d4f76794c4b81b09bb9ba5

SHA1
24cb89501f0212ff3095ecc0aba97dd563718fb1

SHA256
6eebf968962745b2e9de2ca969af7c424916d4e3fe3cc0bb9b3d414abfce9507

SHA512
ecd07e601fc9e3cfc39addd7bd6f3d7f7ff3253afb40bf536e9eaac5a4c243e5ec40fbfd7b216cb0ea29f2517419601e335e33ba19dea4a46f65e38694d465bf

Download Submit
memory/904-71-0x0000000000000000-mapping.dmp

Download
memory/1120-55-0x00000000003D0000-0x00000000003DA000-memory.dmp

Filesize
40KB

Download
memory/1120-56-0x00000000008C0000-0x00000000008FA000-memory.dmp

Filesize
232KB

Download
memory/1120-54-0x0000000001320000-0x000000000137E000-memory.dmp

Filesize
376KB

Download
memory/1176-60-0x0000000000400000-0x000000000042D000-memory.dmp

Filesize
180KB

Download
memory/1176-63-0x0000000000970000-0x0000000000C73000-memory.dmp

Filesize
3.0MB

Download
memory/1176-57-0x0000000000400000-0x000000000042D000-memory.dmp

Filesize
180KB

Download
memory/1176-64-0x00000000003D0000-0x00000000003E4000-memory.dmp

Filesize
80KB

Download
memory/1176-58-0x0000000000400000-0x000000000042D000-memory.dmp

Filesize
180KB

Download
memory/1176-61-0x000000000041E370-mapping.dmp

Download
memory/1292-65-0x00000000061B0000-0x00000000062E1000-memory.dmp

Filesize
1.2MB

Download
memory/1292-73-0x00000000041E0000-0x0000000004277000-memory.dmp

Filesize
604KB

Download
memory/1724-67-0x0000000076721000-0x0000000076723000-memory.dmp

Filesize
8KB

Download
memory/1724-72-0x0000000000A00000-0x0000000000A93000-memory.dmp

Filesize
588KB

Download
memory/1724-70-0x0000000002160000-0x0000000002463000-memory.dmp

Filesize
3.0MB

Download
memory/1724-69-0x00000000000E0000-0x000000000010D000-memory.dmp

Filesize
180KB

Download
memory/1724-68-0x0000000000C50000-0x0000000000D54000-memory.dmp

Filesize
1.0MB

Download
memory/1724-66-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

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Downloads