formbook | 502751e0b4a8acff074def25e8bf46495cc258100652ae11194aea84b5278fcf

General

Target

formbook4.exe
Size

1.0MB
MD5

e434c99075bb1cc365706ac25bc1c53a
SHA1

4cbc665703ef6c5eb46608aa5b8fef42c6afe6f5
SHA256

f50fd444e689593c2b29b62961986f31fe2b61f28850d23680aab7671add1365
SHA512

a6de56271d64f1ec3c4049faaeb99b7822f22b0acb6716a5ac52f7726d6278724d3110361cf13b63d441af01c3668dcde727a3ba322af17e00b33b0b0abb4610
SSDEEP

24576:bpxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxNuss8gPkS3k:23cj+/ZEFdj

Score

10^/10

formbook 5pdf rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Campaign

5pdf

Decoy

cnoOEQHsI9ejYIEif1HquIlIogYo8Ow=

+pAzTzDtpZpp

djD/KBrcDAYQyOGt+Us+fA==

EJM2X0tTvNKodx36

86lMWj8hSQvtqtamtDE6kbKCy3c=

/ywYVB9fxjhRAg==

0OZ0eaYoArZ0

Kl0MifS5n1TXmIQBZLE=

2eN+GpZbBAJDAg==

E8OdZbo7E5cuJgSu2JNUfg==

wXQeNSUaXiXts3xLPw==

PzLRe+HePPeJJB8PJw==

BPaaT7LANzqtcROc+Us+fA==

/vB5AHAzcWtvN1TtGCkZ2L47OjGmU8RrWQ==

gwSl0rcfM/O7hCE=

NrtIzTsH96xB8a3HBhbfMkCs

bxu1vLuDaipA5w0OVuBc8Mw=

2IRJAE05bSVR4Oj7UeBc8Mw=

kQuq4sSpB/7gs3xLPw==

iqhd2Ea725sBlSE=

Signatures

Formbook
Formbook is a data stealing malware which is capable of stealing data.
trojan spyware stealer formbook
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.

Query Registry
T1012

System Information Discovery
T1082

Processes:

formbook4.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Control Panel\International\Geo\Nation formbook4.exe
Loads dropped DLL 1 IoCs

Processes:

systray.exe

pid process

616 systray.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Control Panel\International\Geo\Nation	formbook4.exe

pid	process
616	systray.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

formbook4.exeformbook4.exesystray.exe

description	pid	process	target process
PID 1992 set thread context of 1096	1992	formbook4.exe	formbook4.exe
PID 1096 set thread context of 1192	1096	formbook4.exe	Explorer.EXE
PID 616 set thread context of 1192	616	systray.exe	Explorer.EXE

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exe

pid process

832 schtasks.exe

pid	process
832	schtasks.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-1-5-21-999675638-2867687379-27515722-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	systray.exe

Suspicious behavior: EnumeratesProcesses 16 IoCs

Processes:

formbook4.exeformbook4.exepowershell.exesystray.exe

pid	process
1992	formbook4.exe
1992	formbook4.exe
1096	formbook4.exe
1096	formbook4.exe
1096	formbook4.exe
1096	formbook4.exe
1148	powershell.exe
616	systray.exe
616	systray.exe
616	systray.exe
616	systray.exe
616	systray.exe
616	systray.exe
616	systray.exe
616	systray.exe
616	systray.exe

Suspicious behavior: MapViewOfSection 7 IoCs

Processes:

formbook4.exesystray.exe

pid process

1096 formbook4.exe
1096 formbook4.exe
1096 formbook4.exe
616 systray.exe
616 systray.exe
616 systray.exe
616 systray.exe

pid	process
1096	formbook4.exe
1096	formbook4.exe
1096	formbook4.exe
616	systray.exe
616	systray.exe
616	systray.exe
616	systray.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

formbook4.exeformbook4.exepowershell.exesystray.exe

description	pid	process
Token: SeDebugPrivilege	1992	formbook4.exe
Token: SeDebugPrivilege	1096	formbook4.exe
Token: SeDebugPrivilege	1148	powershell.exe
Token: SeDebugPrivilege	616	systray.exe

Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

Explorer.EXE

pid process

1192 Explorer.EXE
1192 Explorer.EXE
Suspicious use of SendNotifyMessage 2 IoCs

Processes:

Explorer.EXE

pid process

1192 Explorer.EXE
1192 Explorer.EXE

pid	process
1192	Explorer.EXE
1192	Explorer.EXE

pid	process
1192	Explorer.EXE
1192	Explorer.EXE

Suspicious use of WriteProcessMemory 24 IoCs

Processes:

formbook4.exeExplorer.EXEsystray.exe

description	pid	process	target process
PID 1992 wrote to memory of 1148	1992	formbook4.exe	powershell.exe
PID 1992 wrote to memory of 1148	1992	formbook4.exe	powershell.exe
PID 1992 wrote to memory of 1148	1992	formbook4.exe	powershell.exe
PID 1992 wrote to memory of 1148	1992	formbook4.exe	powershell.exe
PID 1992 wrote to memory of 832	1992	formbook4.exe	schtasks.exe
PID 1992 wrote to memory of 832	1992	formbook4.exe	schtasks.exe
PID 1992 wrote to memory of 832	1992	formbook4.exe	schtasks.exe
PID 1992 wrote to memory of 832	1992	formbook4.exe	schtasks.exe
PID 1992 wrote to memory of 1096	1992	formbook4.exe	formbook4.exe
PID 1992 wrote to memory of 1096	1992	formbook4.exe	formbook4.exe
PID 1992 wrote to memory of 1096	1992	formbook4.exe	formbook4.exe
PID 1992 wrote to memory of 1096	1992	formbook4.exe	formbook4.exe
PID 1992 wrote to memory of 1096	1992	formbook4.exe	formbook4.exe
PID 1992 wrote to memory of 1096	1992	formbook4.exe	formbook4.exe
PID 1992 wrote to memory of 1096	1992	formbook4.exe	formbook4.exe
PID 1192 wrote to memory of 616	1192	Explorer.EXE	systray.exe
PID 1192 wrote to memory of 616	1192	Explorer.EXE	systray.exe
PID 1192 wrote to memory of 616	1192	Explorer.EXE	systray.exe
PID 1192 wrote to memory of 616	1192	Explorer.EXE	systray.exe
PID 616 wrote to memory of 956	616	systray.exe	Firefox.exe
PID 616 wrote to memory of 956	616	systray.exe	Firefox.exe
PID 616 wrote to memory of 956	616	systray.exe	Firefox.exe
PID 616 wrote to memory of 956	616	systray.exe	Firefox.exe
PID 616 wrote to memory of 956	616	systray.exe	Firefox.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1192

C:\Users\Admin\AppData\Local\Temp\formbook4.exe
"C:\Users\Admin\AppData\Local\Temp\formbook4.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1992

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\vwzBruALhhNkob.exe"
3⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1148

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\vwzBruALhhNkob" /XML "C:\Users\Admin\AppData\Local\Temp\tmp781D.tmp"
3⤵
- Creates scheduled task(s)
PID:832

C:\Users\Admin\AppData\Local\Temp\formbook4.exe
"C:\Users\Admin\AppData\Local\Temp\formbook4.exe"
3⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:1096

C:\Windows\SysWOW64\systray.exe
"C:\Windows\SysWOW64\systray.exe"
2⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Modifies Internet Explorer settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:616

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:956

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp781D.tmp
Filesize
1KB

MD5
9ef8657bffb7ce178a2cf56b1e9f6476

SHA1
230062c9bd3c52080a32e478d24cbe564e4d3182

SHA256
96c98ef52c6b803d566fadbc6ea30143995bc5649a85114fd566e7a47d65a9df

SHA512
185260c7a962a28b4ae313309b99f23a4be37f231baf3f881dcf08e33e493a63c452012225d933fadfead1e3c8b2289568c769fce8014b085b692a1879620412

Download Submit
\Users\Admin\AppData\Local\Temp\sqlite3.dll
Filesize
849KB

MD5
87f9e5a6318ac1ec5ee05aa94a919d7a

SHA1
7a9956e8de89603dba99772da29493d3fd0fe37d

SHA256
7705b87603e0d772e1753441001fcf1ac2643ee41bf14a8177de2c056628665c

SHA512
c45c03176142918e34f746711e83384572bd6a8ed0a005600aa4a18cf22eade06c76eda190b37db49ec1971c4649e086affd19eee108c5f405df27c0c8cb23d2

Download Submit
memory/616-77-0x0000000000000000-mapping.dmp

Download
memory/616-87-0x0000000000080000-0x00000000000AD000-memory.dmp

Filesize
180KB

Download
memory/616-84-0x0000000001E30000-0x0000000001EBF000-memory.dmp

Filesize
572KB

Download
memory/616-82-0x0000000000080000-0x00000000000AD000-memory.dmp

Filesize
180KB

Download
memory/616-81-0x0000000001FC0000-0x00000000022C3000-memory.dmp

Filesize
3.0MB

Download
memory/616-80-0x00000000002E0000-0x00000000002E5000-memory.dmp

Filesize
20KB

Download
memory/832-60-0x0000000000000000-mapping.dmp

Download
memory/1096-74-0x00000000000E0000-0x00000000000F0000-memory.dmp

Filesize
64KB

Download
memory/1096-78-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1096-68-0x00000000004012B0-mapping.dmp

Download
memory/1096-67-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1096-70-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1096-71-0x0000000000401000-0x000000000042F000-memory.dmp

Filesize
184KB

Download
memory/1096-73-0x0000000000B10000-0x0000000000E13000-memory.dmp

Filesize
3.0MB

Download
memory/1096-79-0x0000000000401000-0x000000000042F000-memory.dmp

Filesize
184KB

Download
memory/1096-65-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1096-64-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1148-88-0x0000000074840000-0x0000000074DEB000-memory.dmp

Filesize
5.7MB

Download
memory/1148-59-0x0000000000000000-mapping.dmp

Download
memory/1148-86-0x0000000074840000-0x0000000074DEB000-memory.dmp

Filesize
5.7MB

Download
memory/1148-76-0x0000000074840000-0x0000000074DEB000-memory.dmp

Filesize
5.7MB

Download
memory/1192-85-0x00000000062C0000-0x00000000063F6000-memory.dmp

Filesize
1.2MB

Download
memory/1192-75-0x0000000004E50000-0x0000000004F22000-memory.dmp

Filesize
840KB

Download
memory/1192-89-0x00000000062C0000-0x00000000063F6000-memory.dmp

Filesize
1.2MB

Download
memory/1992-57-0x0000000000420000-0x000000000042C000-memory.dmp

Filesize
48KB

Download
memory/1992-58-0x00000000041C0000-0x000000000424E000-memory.dmp

Filesize
568KB

Download
memory/1992-56-0x0000000000380000-0x0000000000398000-memory.dmp

Filesize
96KB

Download
memory/1992-63-0x0000000005170000-0x00000000051A4000-memory.dmp

Filesize
208KB

Download
memory/1992-54-0x0000000000A00000-0x0000000000B0C000-memory.dmp

Filesize
1.0MB

Download
memory/1992-55-0x0000000076141000-0x0000000076143000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads