formbook | f7ecfaeac5396a71dfb3d37217125df96e854c2920da7d474184145445f13896

General

Target

BANK_STA.exe
Size

339KB
MD5

c9b0c4cb22b9f6ca2ba4e65a6ddd3f85
SHA1

1db3cc412c6785f5380dc3dd62d8532b6e306ef6
SHA256

2fdf0daf15395bf89c3baab2efff427dd7026ba306bb5c77c5f5598f5c6eb30f
SHA512

28e7992983db2edea83b57af7e3c1848ccc46ef71db3cf1ba250eba3199cea219df2899090b175f944d7315b949fbe1e876a02690bdf607aba1788a8e9f65f74

Score

10^/10

formbook hsk persistence rat spyware stealer suricata trojan

Malware Config

Extracted

Family

formbook

Version

3.9

Campaign

hsk

Decoy

fastcarsforless.com

motmx.info

mail-identity.info

eurovision360.com

hongmuchuanqi.com

ekamente.com

lifestylechristianityfilms.com

garsongroup.com

vykupujeme-knihy.info

mosqueswatch.com

eiyaw.info

multiexample.win

fastkart.net

thebestviva.com

resellers-store.com

dominobets.com

cluemagz.com

aleshianicole.com

craftsmandeadmiration.com

flossiecrums.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/672-69-0x0000000000400000-0x000000000042A000-memory.dmp	formbook
behavioral1/memory/672-70-0x000000000041B680-mapping.dmp	formbook
behavioral1/memory/672-73-0x0000000000400000-0x000000000042A000-memory.dmp	formbook
behavioral1/memory/1068-80-0x0000000000080000-0x00000000000AA000-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:

chkdsk.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	chkdsk.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\J8TPYLN8OVE = "C:\\Program Files (x86)\\Jnz7\\gdinbitefpx.exe"	chkdsk.exe

Executes dropped EXE 3 IoCs

Processes:

BANK_STA.exeBANK_STA.exeBANK_STA.exe

pid process

1780 BANK_STA.exe
528 BANK_STA.exe
672 BANK_STA.exe
Loads dropped DLL 3 IoCs

Processes:

BANK_STA.exe

pid process

1800 BANK_STA.exe
1800 BANK_STA.exe
1800 BANK_STA.exe

pid	process
1780	BANK_STA.exe
528	BANK_STA.exe
672	BANK_STA.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

BANK_STA.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows\CurrentVersion\Run\Run = "\"C:\\Users\\Admin\\AppData\\Local\\Run.exe\""	BANK_STA.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

BANK_STA.exeBANK_STA.exechkdsk.exe

description	pid	process	target process
PID 1800 set thread context of 672	1800	BANK_STA.exe	BANK_STA.exe
PID 672 set thread context of 1288	672	BANK_STA.exe	Explorer.EXE
PID 1068 set thread context of 1288	1068	chkdsk.exe	Explorer.EXE

Drops file in Program Files directory 1 IoCs

Processes:

chkdsk.exe

description ioc process

File opened for modification C:\Program Files (x86)\Jnz7\gdinbitefpx.exe chkdsk.exe
Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry
T1012

System Information Discovery
T1082

Processes:

chkdsk.exe

description ioc process

Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier chkdsk.exe

description	ioc	process
File opened for modification	C:\Program Files (x86)\Jnz7\gdinbitefpx.exe	chkdsk.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	chkdsk.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

chkdsk.exe

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

Suspicious behavior: EnumeratesProcesses 39 IoCs

Processes:

BANK_STA.exeBANK_STA.exechkdsk.exe

pid	process
1800	BANK_STA.exe
1800	BANK_STA.exe
1800	BANK_STA.exe
1800	BANK_STA.exe
1800	BANK_STA.exe
1800	BANK_STA.exe
1800	BANK_STA.exe
1800	BANK_STA.exe
1800	BANK_STA.exe
1800	BANK_STA.exe
1800	BANK_STA.exe
1800	BANK_STA.exe
1800	BANK_STA.exe
1800	BANK_STA.exe
1800	BANK_STA.exe
1800	BANK_STA.exe
1800	BANK_STA.exe
1800	BANK_STA.exe
1800	BANK_STA.exe
1800	BANK_STA.exe
1800	BANK_STA.exe
1800	BANK_STA.exe
1800	BANK_STA.exe
672	BANK_STA.exe
672	BANK_STA.exe
1068	chkdsk.exe
1068	chkdsk.exe
1068	chkdsk.exe
1068	chkdsk.exe
1068	chkdsk.exe
1068	chkdsk.exe
1068	chkdsk.exe
1068	chkdsk.exe
1068	chkdsk.exe
1068	chkdsk.exe
1068	chkdsk.exe
1068	chkdsk.exe
1068	chkdsk.exe
1068	chkdsk.exe

Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

BANK_STA.exechkdsk.exe

pid process

672 BANK_STA.exe
672 BANK_STA.exe
672 BANK_STA.exe
1068 chkdsk.exe
1068 chkdsk.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

BANK_STA.exeBANK_STA.exechkdsk.exe

description pid process

Token: SeDebugPrivilege 1800 BANK_STA.exe
Token: SeDebugPrivilege 672 BANK_STA.exe
Token: SeDebugPrivilege 1068 chkdsk.exe
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

Explorer.EXE

pid process

1288 Explorer.EXE
1288 Explorer.EXE
Suspicious use of SendNotifyMessage 2 IoCs

Processes:

Explorer.EXE

pid process

1288 Explorer.EXE
1288 Explorer.EXE

pid	process
672	BANK_STA.exe
672	BANK_STA.exe
672	BANK_STA.exe
1068	chkdsk.exe
1068	chkdsk.exe

description	pid	process
Token: SeDebugPrivilege	1800	BANK_STA.exe
Token: SeDebugPrivilege	672	BANK_STA.exe
Token: SeDebugPrivilege	1068	chkdsk.exe

pid	process
1288	Explorer.EXE
1288	Explorer.EXE

pid	process
1288	Explorer.EXE
1288	Explorer.EXE

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

BANK_STA.exeExplorer.EXEchkdsk.exe

description	pid	process	target process
PID 1800 wrote to memory of 1780	1800	BANK_STA.exe	BANK_STA.exe
PID 1800 wrote to memory of 1780	1800	BANK_STA.exe	BANK_STA.exe
PID 1800 wrote to memory of 1780	1800	BANK_STA.exe	BANK_STA.exe
PID 1800 wrote to memory of 1780	1800	BANK_STA.exe	BANK_STA.exe
PID 1800 wrote to memory of 528	1800	BANK_STA.exe	BANK_STA.exe
PID 1800 wrote to memory of 528	1800	BANK_STA.exe	BANK_STA.exe
PID 1800 wrote to memory of 528	1800	BANK_STA.exe	BANK_STA.exe
PID 1800 wrote to memory of 528	1800	BANK_STA.exe	BANK_STA.exe
PID 1800 wrote to memory of 672	1800	BANK_STA.exe	BANK_STA.exe
PID 1800 wrote to memory of 672	1800	BANK_STA.exe	BANK_STA.exe
PID 1800 wrote to memory of 672	1800	BANK_STA.exe	BANK_STA.exe
PID 1800 wrote to memory of 672	1800	BANK_STA.exe	BANK_STA.exe
PID 1800 wrote to memory of 672	1800	BANK_STA.exe	BANK_STA.exe
PID 1800 wrote to memory of 672	1800	BANK_STA.exe	BANK_STA.exe
PID 1800 wrote to memory of 672	1800	BANK_STA.exe	BANK_STA.exe
PID 1288 wrote to memory of 1068	1288	Explorer.EXE	chkdsk.exe
PID 1288 wrote to memory of 1068	1288	Explorer.EXE	chkdsk.exe
PID 1288 wrote to memory of 1068	1288	Explorer.EXE	chkdsk.exe
PID 1288 wrote to memory of 1068	1288	Explorer.EXE	chkdsk.exe
PID 1068 wrote to memory of 976	1068	chkdsk.exe	cmd.exe
PID 1068 wrote to memory of 976	1068	chkdsk.exe	cmd.exe
PID 1068 wrote to memory of 976	1068	chkdsk.exe	cmd.exe
PID 1068 wrote to memory of 976	1068	chkdsk.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:1288

C:\Users\Admin\AppData\Local\Temp\BANK_STA.exe
"C:\Users\Admin\AppData\Local\Temp\BANK_STA.exe"
2⤵
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1800

C:\Users\Admin\AppData\Local\Temp\BANK_STA.exe
"C:\Users\Admin\AppData\Local\Temp\BANK_STA.exe"
3⤵
- Executes dropped EXE
PID:1780

C:\Users\Admin\AppData\Local\Temp\BANK_STA.exe
"C:\Users\Admin\AppData\Local\Temp\BANK_STA.exe"
3⤵
- Executes dropped EXE
PID:528

C:\Users\Admin\AppData\Local\Temp\BANK_STA.exe
"C:\Users\Admin\AppData\Local\Temp\BANK_STA.exe"
3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:672

C:\Windows\SysWOW64\chkdsk.exe
"C:\Windows\SysWOW64\chkdsk.exe"
2⤵
- Adds policy Run key to start application
- Suspicious use of SetThreadContext
- Drops file in Program Files directory
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1068

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\BANK_STA.exe"
3⤵
PID:976

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

2

T1060

Privilege Escalation

Defense Evasion

Modify Registry

3

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\BANK_STA.exe
Filesize
339KB

MD5
c9b0c4cb22b9f6ca2ba4e65a6ddd3f85

SHA1
1db3cc412c6785f5380dc3dd62d8532b6e306ef6

SHA256
2fdf0daf15395bf89c3baab2efff427dd7026ba306bb5c77c5f5598f5c6eb30f

SHA512
28e7992983db2edea83b57af7e3c1848ccc46ef71db3cf1ba250eba3199cea219df2899090b175f944d7315b949fbe1e876a02690bdf607aba1788a8e9f65f74

Download Submit
C:\Users\Admin\AppData\Local\Temp\BANK_STA.exe
Filesize
339KB

MD5
c9b0c4cb22b9f6ca2ba4e65a6ddd3f85

SHA1
1db3cc412c6785f5380dc3dd62d8532b6e306ef6

SHA256
2fdf0daf15395bf89c3baab2efff427dd7026ba306bb5c77c5f5598f5c6eb30f

SHA512
28e7992983db2edea83b57af7e3c1848ccc46ef71db3cf1ba250eba3199cea219df2899090b175f944d7315b949fbe1e876a02690bdf607aba1788a8e9f65f74

Download Submit
C:\Users\Admin\AppData\Local\Temp\BANK_STA.exe
Filesize
339KB

MD5
c9b0c4cb22b9f6ca2ba4e65a6ddd3f85

SHA1
1db3cc412c6785f5380dc3dd62d8532b6e306ef6

SHA256
2fdf0daf15395bf89c3baab2efff427dd7026ba306bb5c77c5f5598f5c6eb30f

SHA512
28e7992983db2edea83b57af7e3c1848ccc46ef71db3cf1ba250eba3199cea219df2899090b175f944d7315b949fbe1e876a02690bdf607aba1788a8e9f65f74

Download Submit
\Users\Admin\AppData\Local\Temp\BANK_STA.exe
Filesize
339KB

MD5
c9b0c4cb22b9f6ca2ba4e65a6ddd3f85

SHA1
1db3cc412c6785f5380dc3dd62d8532b6e306ef6

SHA256
2fdf0daf15395bf89c3baab2efff427dd7026ba306bb5c77c5f5598f5c6eb30f

SHA512
28e7992983db2edea83b57af7e3c1848ccc46ef71db3cf1ba250eba3199cea219df2899090b175f944d7315b949fbe1e876a02690bdf607aba1788a8e9f65f74

Download Submit
\Users\Admin\AppData\Local\Temp\BANK_STA.exe
Filesize
339KB

MD5
c9b0c4cb22b9f6ca2ba4e65a6ddd3f85

SHA1
1db3cc412c6785f5380dc3dd62d8532b6e306ef6

SHA256
2fdf0daf15395bf89c3baab2efff427dd7026ba306bb5c77c5f5598f5c6eb30f

SHA512
28e7992983db2edea83b57af7e3c1848ccc46ef71db3cf1ba250eba3199cea219df2899090b175f944d7315b949fbe1e876a02690bdf607aba1788a8e9f65f74

Download Submit
\Users\Admin\AppData\Local\Temp\BANK_STA.exe
Filesize
339KB

MD5
c9b0c4cb22b9f6ca2ba4e65a6ddd3f85

SHA1
1db3cc412c6785f5380dc3dd62d8532b6e306ef6

SHA256
2fdf0daf15395bf89c3baab2efff427dd7026ba306bb5c77c5f5598f5c6eb30f

SHA512
28e7992983db2edea83b57af7e3c1848ccc46ef71db3cf1ba250eba3199cea219df2899090b175f944d7315b949fbe1e876a02690bdf607aba1788a8e9f65f74

Download Submit
memory/672-69-0x0000000000400000-0x000000000042A000-memory.dmp

Filesize
168KB

Download
memory/672-73-0x0000000000400000-0x000000000042A000-memory.dmp

Filesize
168KB

Download
memory/672-75-0x00000000002A0000-0x00000000002B4000-memory.dmp

Filesize
80KB

Download
memory/672-74-0x0000000000920000-0x0000000000C23000-memory.dmp

Filesize
3.0MB

Download
memory/672-70-0x000000000041B680-mapping.dmp

Download
memory/672-67-0x0000000000400000-0x000000000042A000-memory.dmp

Filesize
168KB

Download
memory/672-66-0x0000000000400000-0x000000000042A000-memory.dmp

Filesize
168KB

Download
memory/976-78-0x0000000000000000-mapping.dmp

Download
memory/1068-77-0x0000000000000000-mapping.dmp

Download
memory/1068-82-0x0000000000A30000-0x0000000000AC3000-memory.dmp

Filesize
588KB

Download
memory/1068-81-0x0000000002160000-0x0000000002463000-memory.dmp

Filesize
3.0MB

Download
memory/1068-80-0x0000000000080000-0x00000000000AA000-memory.dmp

Filesize
168KB

Download
memory/1068-79-0x0000000000D50000-0x0000000000D57000-memory.dmp

Filesize
28KB

Download
memory/1288-83-0x00000000068F0000-0x00000000069D8000-memory.dmp

Filesize
928KB

Download
memory/1288-76-0x0000000004F40000-0x00000000050A5000-memory.dmp

Filesize
1.4MB

Download
memory/1800-55-0x0000000074E91000-0x0000000074E93000-memory.dmp

Filesize
8KB

Download
memory/1800-59-0x0000000000580000-0x0000000000596000-memory.dmp

Filesize
88KB

Download
memory/1800-58-0x0000000000430000-0x0000000000446000-memory.dmp

Filesize
88KB

Download
memory/1800-60-0x0000000000650000-0x0000000000658000-memory.dmp

Filesize
32KB

Download
memory/1800-56-0x0000000000260000-0x0000000000268000-memory.dmp

Filesize
32KB

Download
memory/1800-57-0x0000000000450000-0x0000000000490000-memory.dmp

Filesize
256KB

Download
memory/1800-54-0x00000000008C0000-0x000000000091C000-memory.dmp

Filesize
368KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads