formbook | 8b516901a17ec32794de8c3577cba8cdcc9e85577a5d2e8a244cd202b5b01cc7

General

Target

Bdcuhmcgbsvmxhmuasrulqqnfbjdnogomk.exe
Size

814KB
MD5

717297fec68e9172593a36a67549619f
SHA1

73e8625983cb413b91b608db347177584c680a22
SHA256

4d80ab79360b092bb5d8fa41d14388dffe5ef42839b6dbbf741f0ce5c3424d1e
SHA512

3f363a8b8971d843f7c158b3dc76de854895a76fe0e4a6dbb6b40b650d0cec760bea15179128e52fed044e2cee6964f2b70db5abf253e873feb327d6b99ba7df

Score

10^/10

formbook 3nop rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

3nop

C2

http://www.jakesplacebarbers.com/3nop/

Decoy

videohm.com

panache-rose.com

alnooncars-kw.com

trueblue2u.com

brussels-cafe.com

ip2c.net

influenzerr.com

rbcoq.com

zzful.com

drainthe.com

sumaholesson.com

cursosaprovados.com

genotecinc.com

dbrulhart.com

theapiarystudios.com

kensyu-kan.com

dkku88.com

tikhyper.com

aztecnort.com

homebrim.com

Signatures

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

Formbook Payload 3 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/776-57-0x0000000000000000-mapping.dmp	formbook
behavioral1/memory/776-60-0x0000000010410000-0x000000001043E000-memory.dmp	formbook
behavioral1/memory/1500-67-0x0000000000080000-0x00000000000AE000-memory.dmp	formbook

Suspicious use of SetThreadContext 2 IoCs

Processes:

dialer.exechkdsk.exe

description	pid	process	target process
PID 776 set thread context of 1376	776	dialer.exe	Explorer.EXE
PID 1500 set thread context of 1376	1500	chkdsk.exe	Explorer.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
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	chkdsk.exe

Suspicious behavior: EnumeratesProcesses 26 IoCs

Processes:

dialer.exechkdsk.exe

pid	process
776	dialer.exe
776	dialer.exe
1500	chkdsk.exe
1500	chkdsk.exe
1500	chkdsk.exe
1500	chkdsk.exe
1500	chkdsk.exe
1500	chkdsk.exe
1500	chkdsk.exe
1500	chkdsk.exe
1500	chkdsk.exe
1500	chkdsk.exe
1500	chkdsk.exe
1500	chkdsk.exe
1500	chkdsk.exe
1500	chkdsk.exe
1500	chkdsk.exe
1500	chkdsk.exe
1500	chkdsk.exe
1500	chkdsk.exe
1500	chkdsk.exe
1500	chkdsk.exe
1500	chkdsk.exe
1500	chkdsk.exe
1500	chkdsk.exe
1500	chkdsk.exe

Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

dialer.exechkdsk.exe

pid process

776 dialer.exe
776 dialer.exe
776 dialer.exe
1500 chkdsk.exe
1500 chkdsk.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

dialer.exechkdsk.exe

description pid process

Token: SeDebugPrivilege 776 dialer.exe
Token: SeDebugPrivilege 1500 chkdsk.exe

description	pid	process
Token: SeDebugPrivilege	776	dialer.exe
Token: SeDebugPrivilege	1500	chkdsk.exe

Suspicious use of FindShellTrayWindow 14 IoCs

Processes:

Explorer.EXE

pid	process
1376	Explorer.EXE
1376	Explorer.EXE
1376	Explorer.EXE
1376	Explorer.EXE
1376	Explorer.EXE
1376	Explorer.EXE
1376	Explorer.EXE
1376	Explorer.EXE
1376	Explorer.EXE
1376	Explorer.EXE
1376	Explorer.EXE
1376	Explorer.EXE
1376	Explorer.EXE
1376	Explorer.EXE

Suspicious use of SendNotifyMessage 14 IoCs

Processes:

Explorer.EXE

pid	process
1376	Explorer.EXE
1376	Explorer.EXE
1376	Explorer.EXE
1376	Explorer.EXE
1376	Explorer.EXE
1376	Explorer.EXE
1376	Explorer.EXE
1376	Explorer.EXE
1376	Explorer.EXE
1376	Explorer.EXE
1376	Explorer.EXE
1376	Explorer.EXE
1376	Explorer.EXE
1376	Explorer.EXE

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

Bdcuhmcgbsvmxhmuasrulqqnfbjdnogomk.exeExplorer.EXEchkdsk.exe

description	pid	process	target process
PID 1664 wrote to memory of 776	1664	Bdcuhmcgbsvmxhmuasrulqqnfbjdnogomk.exe	dialer.exe
PID 1664 wrote to memory of 776	1664	Bdcuhmcgbsvmxhmuasrulqqnfbjdnogomk.exe	dialer.exe
PID 1664 wrote to memory of 776	1664	Bdcuhmcgbsvmxhmuasrulqqnfbjdnogomk.exe	dialer.exe
PID 1664 wrote to memory of 776	1664	Bdcuhmcgbsvmxhmuasrulqqnfbjdnogomk.exe	dialer.exe
PID 1664 wrote to memory of 776	1664	Bdcuhmcgbsvmxhmuasrulqqnfbjdnogomk.exe	dialer.exe
PID 1664 wrote to memory of 776	1664	Bdcuhmcgbsvmxhmuasrulqqnfbjdnogomk.exe	dialer.exe
PID 1664 wrote to memory of 776	1664	Bdcuhmcgbsvmxhmuasrulqqnfbjdnogomk.exe	dialer.exe
PID 1376 wrote to memory of 1500	1376	Explorer.EXE	chkdsk.exe
PID 1376 wrote to memory of 1500	1376	Explorer.EXE	chkdsk.exe
PID 1376 wrote to memory of 1500	1376	Explorer.EXE	chkdsk.exe
PID 1376 wrote to memory of 1500	1376	Explorer.EXE	chkdsk.exe
PID 1500 wrote to memory of 2040	1500	chkdsk.exe	cmd.exe
PID 1500 wrote to memory of 2040	1500	chkdsk.exe	cmd.exe
PID 1500 wrote to memory of 2040	1500	chkdsk.exe	cmd.exe
PID 1500 wrote to memory of 2040	1500	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:1376

C:\Users\Admin\AppData\Local\Temp\Bdcuhmcgbsvmxhmuasrulqqnfbjdnogomk.exe
"C:\Users\Admin\AppData\Local\Temp\Bdcuhmcgbsvmxhmuasrulqqnfbjdnogomk.exe"
2⤵
- Suspicious use of WriteProcessMemory
PID:1664

C:\Windows\SysWOW64\dialer.exe
C:\Windows\System32\dialer.exe
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:776

C:\Windows\SysWOW64\chkdsk.exe
"C:\Windows\SysWOW64\chkdsk.exe"
2⤵
- Suspicious use of SetThreadContext
- Enumerates system info in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1500

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Windows\SysWOW64\dialer.exe"
3⤵
PID:2040

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

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

memory/776-62-0x00000000001F0000-0x0000000000204000-memory.dmp

Filesize
80KB

Download
memory/776-57-0x0000000000000000-mapping.dmp

Download
memory/776-59-0x0000000000090000-0x0000000000091000-memory.dmp

Filesize
4KB

Download
memory/776-60-0x0000000010410000-0x000000001043E000-memory.dmp

Filesize
184KB

Download
memory/776-61-0x00000000021F0000-0x00000000024F3000-memory.dmp

Filesize
3.0MB

Download
memory/1376-63-0x0000000004B90000-0x0000000004C4F000-memory.dmp

Filesize
764KB

Download
memory/1376-70-0x00000000081B0000-0x00000000082D2000-memory.dmp

Filesize
1.1MB

Download
memory/1500-64-0x0000000000000000-mapping.dmp

Download
memory/1500-66-0x0000000000A70000-0x0000000000A77000-memory.dmp

Filesize
28KB

Download
memory/1500-68-0x0000000002010000-0x0000000002313000-memory.dmp

Filesize
3.0MB

Download
memory/1500-67-0x0000000000080000-0x00000000000AE000-memory.dmp

Filesize
184KB

Download
memory/1500-69-0x0000000000610000-0x00000000006A3000-memory.dmp

Filesize
588KB

Download
memory/1664-52-0x0000000000230000-0x0000000000231000-memory.dmp

Filesize
4KB

Download
memory/1664-56-0x0000000075AD1000-0x0000000075AD3000-memory.dmp

Filesize
8KB

Download
memory/2040-65-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads