formbook | bdfb763b51cd4a618ad0d10388f1f478d1acddc7917891a990e8f390c9319b76

General

Target

CC2107139144.exe
Size

856KB
MD5

51beaa7443a361691a0cbef6e56d890b
SHA1

5a851452118c729d94b99f83c85cd819f5f96de6
SHA256

bdfb763b51cd4a618ad0d10388f1f478d1acddc7917891a990e8f390c9319b76
SHA512

2f41652699b858e31182ad7c14593034c75c78929ce24ab1ec65cf62f800cc04e0c64acc08a3e4c3d28d5d38769a829d38ce4fa684ed89f384ca663bb1b4a440

Score

10^/10

formbook v32s rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

v32s

Decoy

water-hada-utsukushii.xyz

9v6v.com

rechtsanwalt-trnka.com

lets-eat-healthy.com

vannyscreamycreations.com

cosy-bamboo.com

leedexamtraining.com

lilbusinessowner.com

cncvietnam.net

gpsplayback.com

aroidaddictfl.com

patienpower.info

777londonescorts.com

whrpky078.xyz

yqamuh.com

virtualft.com

fanfanway.com

56789r.com

926397.com

kp-crane.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/1624-65-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/1536-76-0x00000000000E0000-0x000000000010F000-memory.dmp	formbook

Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

1932 cmd.exe

pid	process
1932	cmd.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

CC2107139144.exeCC2107139144.exechkdsk.exe

description	pid	process	target process
PID 1576 set thread context of 1624	1576	CC2107139144.exe	CC2107139144.exe
PID 1624 set thread context of 1380	1624	CC2107139144.exe	Explorer.EXE
PID 1536 set thread context of 1380	1536	chkdsk.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

1156 schtasks.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

pid	process
1156	schtasks.exe

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

Suspicious behavior: EnumeratesProcesses 27 IoCs

Processes:

CC2107139144.exeCC2107139144.exepowershell.exechkdsk.exe

pid	process
1576	CC2107139144.exe
1576	CC2107139144.exe
1576	CC2107139144.exe
1576	CC2107139144.exe
1624	CC2107139144.exe
1624	CC2107139144.exe
1648	powershell.exe
1536	chkdsk.exe
1536	chkdsk.exe
1536	chkdsk.exe
1536	chkdsk.exe
1536	chkdsk.exe
1536	chkdsk.exe
1536	chkdsk.exe
1536	chkdsk.exe
1536	chkdsk.exe
1536	chkdsk.exe
1536	chkdsk.exe
1536	chkdsk.exe
1536	chkdsk.exe
1536	chkdsk.exe
1536	chkdsk.exe
1536	chkdsk.exe
1536	chkdsk.exe
1536	chkdsk.exe
1536	chkdsk.exe
1536	chkdsk.exe

Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

CC2107139144.exechkdsk.exe

pid process

1624 CC2107139144.exe
1624 CC2107139144.exe
1624 CC2107139144.exe
1536 chkdsk.exe
1536 chkdsk.exe

pid	process
1624	CC2107139144.exe
1624	CC2107139144.exe
1624	CC2107139144.exe
1536	chkdsk.exe
1536	chkdsk.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

CC2107139144.exeCC2107139144.exepowershell.exechkdsk.exe

description	pid	process
Token: SeDebugPrivilege	1576	CC2107139144.exe
Token: SeDebugPrivilege	1624	CC2107139144.exe
Token: SeDebugPrivilege	1648	powershell.exe
Token: SeDebugPrivilege	1536	chkdsk.exe

Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

Explorer.EXE

pid process

1380 Explorer.EXE
1380 Explorer.EXE
Suspicious use of SendNotifyMessage 2 IoCs

Processes:

Explorer.EXE

pid process

1380 Explorer.EXE
1380 Explorer.EXE

pid	process
1380	Explorer.EXE
1380	Explorer.EXE

pid	process
1380	Explorer.EXE
1380	Explorer.EXE

Suspicious use of WriteProcessMemory 27 IoCs

Processes:

CC2107139144.exeExplorer.EXEchkdsk.exe

description	pid	process	target process
PID 1576 wrote to memory of 1648	1576	CC2107139144.exe	powershell.exe
PID 1576 wrote to memory of 1648	1576	CC2107139144.exe	powershell.exe
PID 1576 wrote to memory of 1648	1576	CC2107139144.exe	powershell.exe
PID 1576 wrote to memory of 1648	1576	CC2107139144.exe	powershell.exe
PID 1576 wrote to memory of 1156	1576	CC2107139144.exe	schtasks.exe
PID 1576 wrote to memory of 1156	1576	CC2107139144.exe	schtasks.exe
PID 1576 wrote to memory of 1156	1576	CC2107139144.exe	schtasks.exe
PID 1576 wrote to memory of 1156	1576	CC2107139144.exe	schtasks.exe
PID 1576 wrote to memory of 1832	1576	CC2107139144.exe	CC2107139144.exe
PID 1576 wrote to memory of 1832	1576	CC2107139144.exe	CC2107139144.exe
PID 1576 wrote to memory of 1832	1576	CC2107139144.exe	CC2107139144.exe
PID 1576 wrote to memory of 1832	1576	CC2107139144.exe	CC2107139144.exe
PID 1576 wrote to memory of 1624	1576	CC2107139144.exe	CC2107139144.exe
PID 1576 wrote to memory of 1624	1576	CC2107139144.exe	CC2107139144.exe
PID 1576 wrote to memory of 1624	1576	CC2107139144.exe	CC2107139144.exe
PID 1576 wrote to memory of 1624	1576	CC2107139144.exe	CC2107139144.exe
PID 1576 wrote to memory of 1624	1576	CC2107139144.exe	CC2107139144.exe
PID 1576 wrote to memory of 1624	1576	CC2107139144.exe	CC2107139144.exe
PID 1576 wrote to memory of 1624	1576	CC2107139144.exe	CC2107139144.exe
PID 1380 wrote to memory of 1536	1380	Explorer.EXE	chkdsk.exe
PID 1380 wrote to memory of 1536	1380	Explorer.EXE	chkdsk.exe
PID 1380 wrote to memory of 1536	1380	Explorer.EXE	chkdsk.exe
PID 1380 wrote to memory of 1536	1380	Explorer.EXE	chkdsk.exe
PID 1536 wrote to memory of 1932	1536	chkdsk.exe	cmd.exe
PID 1536 wrote to memory of 1932	1536	chkdsk.exe	cmd.exe
PID 1536 wrote to memory of 1932	1536	chkdsk.exe	cmd.exe
PID 1536 wrote to memory of 1932	1536	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:1380

C:\Users\Admin\AppData\Local\Temp\CC2107139144.exe
"C:\Users\Admin\AppData\Local\Temp\CC2107139144.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1576

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\syYqoKuzIfgUfe.exe"
3⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1648

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\syYqoKuzIfgUfe" /XML "C:\Users\Admin\AppData\Local\Temp\tmp9231.tmp"
3⤵
- Creates scheduled task(s)
PID:1156

C:\Users\Admin\AppData\Local\Temp\CC2107139144.exe
"C:\Users\Admin\AppData\Local\Temp\CC2107139144.exe"
3⤵
PID:1832

C:\Users\Admin\AppData\Local\Temp\CC2107139144.exe
"C:\Users\Admin\AppData\Local\Temp\CC2107139144.exe"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:1624

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:1536

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\CC2107139144.exe"
3⤵
- Deletes itself
PID:1932

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Credential Access

Discovery

System Information Discovery

2

T1082

Query Registry

1

T1012

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp9231.tmp
MD5
a374dcccef3865fc427d830c6f9d5cdc

SHA1
32a2c5333f2335944c294f4fba932ff6f8ffced1

SHA256
0f258b2371d855517366a055b0ffc2e8e3e39221fecb4d315d31b8195ec5a3e6

SHA512
314a9f2e15211c9acdadb84320ae6f55853445e56b1e288ee92bcb7dd21e7f0ff25728be0b88490c8c29bb18f2ecb74c6a6b175bb346fde88d68d616bc94b291

Download Submit
memory/1380-71-0x0000000007490000-0x00000000075FB000-memory.dmp

Filesize
1.4MB

Download
memory/1380-79-0x00000000044B0000-0x0000000004577000-memory.dmp

Filesize
796KB

Download
memory/1536-77-0x0000000002080000-0x0000000002383000-memory.dmp

Filesize
3.0MB

Download
memory/1536-78-0x0000000001CB0000-0x0000000001EEC000-memory.dmp

Filesize
2.2MB

Download
memory/1536-75-0x00000000006C0000-0x00000000006C7000-memory.dmp

Filesize
28KB

Download
memory/1536-76-0x00000000000E0000-0x000000000010F000-memory.dmp

Filesize
188KB

Download
memory/1576-59-0x0000000000620000-0x000000000062E000-memory.dmp

Filesize
56KB

Download
memory/1576-60-0x0000000005550000-0x00000000055FC000-memory.dmp

Filesize
688KB

Download
memory/1576-58-0x000000007EF40000-0x000000007EF41000-memory.dmp

Filesize
4KB

Download
memory/1576-57-0x0000000004C40000-0x0000000004C41000-memory.dmp

Filesize
4KB

Download
memory/1576-55-0x0000000000220000-0x00000000002FC000-memory.dmp

Filesize
880KB

Download
memory/1576-56-0x0000000076141000-0x0000000076143000-memory.dmp

Filesize
8KB

Download
memory/1624-69-0x0000000000C50000-0x0000000000F53000-memory.dmp

Filesize
3.0MB

Download
memory/1624-70-0x0000000000140000-0x0000000000155000-memory.dmp

Filesize
84KB

Download
memory/1624-65-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1624-64-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1624-63-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1648-73-0x0000000002220000-0x00000000023D0000-memory.dmp

Filesize
1.7MB

Download
memory/1648-74-0x0000000002220000-0x00000000023D0000-memory.dmp

Filesize
1.7MB

Download
memory/1648-72-0x0000000002220000-0x00000000023D0000-memory.dmp

Filesize
1.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads