formbook | 63abc500d2a9f12692276d1cd2becc0ce16719ab69a69ea9827bd411f12b4291

Analysis

max time kernel
150s
max time network
147s
platform
windows7_x64
resource
win7v20210408
submitted
06-05-2021 21:56

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General

Target

BANK RECEIPT.exe
Size

280KB
MD5

6317a0b98ebd6f0ba716fc1b73b4bf31
SHA1

6f593ad2588b2ca2e561f0b47c9654df9fd95932
SHA256

a2e99d0aabd8f0ad83b885eccf313563526a58b2da435bf34dad29294c712efe
SHA512

e29265b8cc385be1c86751dd04dd2a70d727e8e298cd0d0ca250c2c6515c8d1c189511c564de11cf9c3c85d3efed1e23f7ad4b91bcca156b6b7c4341195f449a

Score

10^/10

formbook rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

http://www.knighttechinca.com/dxe/

Decoy

sardarfarm.com

959tremont.com

privat-livecam.net

ansel-homebakery.com

joysupermarket.com

peninsulamatchmakers.net

northsytyle.com

radioconexaoubermusic.com

relocatingrealtor.com

desyrnan.com

onlinehoortoestel.online

enpointe.online

rvvikings.com

paulpoirier.com

shitarpa.net

kerneis.net

rokitreach.com

essentiallygaia.com

prestiged.net

fuerzaagavera.com

Signatures

Formbook
Formbook is a data stealing malware which is capable of stealing data.
trojan spyware stealer formbook

Formbook Payload 2 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/1988-64-0x0000000000400000-0x000000000042E000-memory.dmp	formbook
behavioral1/memory/748-73-0x0000000000090000-0x00000000000BE000-memory.dmp	formbook

Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

1764 cmd.exe
Loads dropped DLL 1 IoCs

Processes:

BANK RECEIPT.exe

pid process

1840 BANK RECEIPT.exe

pid	process
1764	cmd.exe

pid	process
1840	BANK RECEIPT.exe

Suspicious use of SetThreadContext 4 IoCs

Processes:

BANK RECEIPT.exeBANK RECEIPT.exewuapp.exe

description	pid	process	target process
PID 1840 set thread context of 1988	1840	BANK RECEIPT.exe	BANK RECEIPT.exe
PID 1988 set thread context of 1212	1988	BANK RECEIPT.exe	Explorer.EXE
PID 1988 set thread context of 1212	1988	BANK RECEIPT.exe	Explorer.EXE
PID 748 set thread context of 1212	748	wuapp.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

Suspicious behavior: EnumeratesProcesses 29 IoCs

Processes:

BANK RECEIPT.exewuapp.exe

pid	process
1988	BANK RECEIPT.exe
1988	BANK RECEIPT.exe
1988	BANK RECEIPT.exe
748	wuapp.exe
748	wuapp.exe
748	wuapp.exe
748	wuapp.exe
748	wuapp.exe
748	wuapp.exe
748	wuapp.exe
748	wuapp.exe
748	wuapp.exe
748	wuapp.exe
748	wuapp.exe
748	wuapp.exe
748	wuapp.exe
748	wuapp.exe
748	wuapp.exe
748	wuapp.exe
748	wuapp.exe
748	wuapp.exe
748	wuapp.exe
748	wuapp.exe
748	wuapp.exe
748	wuapp.exe
748	wuapp.exe
748	wuapp.exe
748	wuapp.exe
748	wuapp.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

1212 Explorer.EXE
Suspicious behavior: MapViewOfSection 7 IoCs

Processes:

BANK RECEIPT.exeBANK RECEIPT.exewuapp.exe

pid process

1840 BANK RECEIPT.exe
1988 BANK RECEIPT.exe
1988 BANK RECEIPT.exe
1988 BANK RECEIPT.exe
1988 BANK RECEIPT.exe
748 wuapp.exe
748 wuapp.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

BANK RECEIPT.exewuapp.exe

description pid process

Token: SeDebugPrivilege 1988 BANK RECEIPT.exe
Token: SeDebugPrivilege 748 wuapp.exe
Suspicious use of FindShellTrayWindow 4 IoCs

Processes:

Explorer.EXE

pid process

1212 Explorer.EXE
1212 Explorer.EXE
1212 Explorer.EXE
1212 Explorer.EXE
Suspicious use of SendNotifyMessage 4 IoCs

Processes:

Explorer.EXE

pid process

1212 Explorer.EXE
1212 Explorer.EXE
1212 Explorer.EXE
1212 Explorer.EXE

pid	process
1212	Explorer.EXE

pid	process
1840	BANK RECEIPT.exe
1988	BANK RECEIPT.exe
1988	BANK RECEIPT.exe
1988	BANK RECEIPT.exe
1988	BANK RECEIPT.exe
748	wuapp.exe
748	wuapp.exe

description	pid	process
Token: SeDebugPrivilege	1988	BANK RECEIPT.exe
Token: SeDebugPrivilege	748	wuapp.exe

pid	process
1212	Explorer.EXE
1212	Explorer.EXE
1212	Explorer.EXE
1212	Explorer.EXE

pid	process
1212	Explorer.EXE
1212	Explorer.EXE
1212	Explorer.EXE
1212	Explorer.EXE

Suspicious use of WriteProcessMemory 16 IoCs

Processes:

BANK RECEIPT.exeBANK RECEIPT.exewuapp.exe

description	pid	process	target process
PID 1840 wrote to memory of 1988	1840	BANK RECEIPT.exe	BANK RECEIPT.exe
PID 1840 wrote to memory of 1988	1840	BANK RECEIPT.exe	BANK RECEIPT.exe
PID 1840 wrote to memory of 1988	1840	BANK RECEIPT.exe	BANK RECEIPT.exe
PID 1840 wrote to memory of 1988	1840	BANK RECEIPT.exe	BANK RECEIPT.exe
PID 1840 wrote to memory of 1988	1840	BANK RECEIPT.exe	BANK RECEIPT.exe
PID 1988 wrote to memory of 748	1988	BANK RECEIPT.exe	wuapp.exe
PID 1988 wrote to memory of 748	1988	BANK RECEIPT.exe	wuapp.exe
PID 1988 wrote to memory of 748	1988	BANK RECEIPT.exe	wuapp.exe
PID 1988 wrote to memory of 748	1988	BANK RECEIPT.exe	wuapp.exe
PID 1988 wrote to memory of 748	1988	BANK RECEIPT.exe	wuapp.exe
PID 1988 wrote to memory of 748	1988	BANK RECEIPT.exe	wuapp.exe
PID 1988 wrote to memory of 748	1988	BANK RECEIPT.exe	wuapp.exe
PID 748 wrote to memory of 1764	748	wuapp.exe	cmd.exe
PID 748 wrote to memory of 1764	748	wuapp.exe	cmd.exe
PID 748 wrote to memory of 1764	748	wuapp.exe	cmd.exe
PID 748 wrote to memory of 1764	748	wuapp.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:1212

C:\Users\Admin\AppData\Local\Temp\BANK RECEIPT.exe
"C:\Users\Admin\AppData\Local\Temp\BANK RECEIPT.exe"
2⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:1840

C:\Users\Admin\AppData\Local\Temp\BANK RECEIPT.exe
"C:\Users\Admin\AppData\Local\Temp\BANK RECEIPT.exe"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1988

C:\Windows\SysWOW64\wuapp.exe
"C:\Windows\SysWOW64\wuapp.exe"
4⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:748

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\BANK RECEIPT.exe"
5⤵
- Deletes itself
PID:1764

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

\Users\Admin\AppData\Local\Temp\nss8A76.tmp\2g6ght2plrugud.dll
MD5
64ade443342d3aa3790c2846abf93959

SHA1
d6668f6881d40dc3dc3d1f627f2721e1d333e698

SHA256
ea1deb95fa6614524006ee3260957aef27ebd563f609dde680cace5f2ea09e45

SHA512
2fdce6c768ded710d6d011be5317b184a09e10058145bdff545e83df63f5e0f46db4f679161174397b37d0fb2f43abe7275405845742e4a73bc6ef995edf4845

Download Submit
memory/748-72-0x0000000000890000-0x000000000089B000-memory.dmp

Filesize
44KB

Download
memory/748-75-0x00000000002D0000-0x0000000000363000-memory.dmp

Filesize
588KB

Download
memory/748-74-0x0000000002100000-0x0000000002403000-memory.dmp

Filesize
3.0MB

Download
memory/748-73-0x0000000000090000-0x00000000000BE000-memory.dmp

Filesize
184KB

Download
memory/748-70-0x0000000000000000-mapping.dmp

Download
memory/1212-76-0x0000000005030000-0x0000000005134000-memory.dmp

Filesize
1.0MB

Download
memory/1212-66-0x00000000043D0000-0x00000000044D0000-memory.dmp

Filesize
1024KB

Download
memory/1212-69-0x0000000006E90000-0x000000000703B000-memory.dmp

Filesize
1.7MB

Download
memory/1764-71-0x0000000000000000-mapping.dmp

Download
memory/1840-63-0x00000000003D0000-0x00000000003D2000-memory.dmp

Filesize
8KB

Download
memory/1840-60-0x0000000074D91000-0x0000000074D93000-memory.dmp

Filesize
8KB

Download
memory/1988-65-0x0000000000480000-0x0000000000494000-memory.dmp

Filesize
80KB

Download
memory/1988-68-0x00000000006D0000-0x00000000006E4000-memory.dmp

Filesize
80KB

Download
memory/1988-67-0x0000000000700000-0x0000000000A03000-memory.dmp

Filesize
3.0MB

Download
memory/1988-64-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/1988-62-0x000000000041EAF0-mapping.dmp

Download