formbook | a9a8118ba7dbac756aa0778ec6680ec681ad2e0bd4ed6ccc121c22b73dfe7b29

General

Target

New order list.exe
Size

702KB
MD5

b547ecb89df9e1ff489f6147aec4d24f
SHA1

3fedd95046f51ae97519463a97dda493485e88c9
SHA256

a9a8118ba7dbac756aa0778ec6680ec681ad2e0bd4ed6ccc121c22b73dfe7b29
SHA512

83a3458904f37a941436fecd117177e9907ec97dc87bccb44cc7c5517aab9ac598f2ed4b07121d530bfa05b5ff683bcd42b4dce85d575c15bc077a19a2c2afec

Score

10^/10

formbook persistence rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

C2

http://www.joomlas123.info/3nop/

Decoy

bakecakesandmore.com

shenglisuoye.com

chinapopfactory.com

ynlrhd.com

liqourforyou.com

leonqamil.com

meccafon.com

online-marketing-strategie.biz

rbfxi.com

frseyb.info

leyu91.com

hotsmail.today

beepot.tech

dunaemmetmobility.com

sixpenceworkshop.com

incrediblefavorcoaching.com

pofo.info

yanshudaili.com

yellowbrickwedding.com

paintpartyblueprint.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/1768-62-0x0000000000000000-mapping.dmp	formbook
behavioral1/memory/1768-66-0x0000000010410000-0x000000001043D000-memory.dmp	formbook
behavioral1/memory/1812-72-0x00000000000C0000-0x00000000000ED000-memory.dmp	formbook

Adds 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\Wow6432Node\Microsoft\Windows\CurrentVersion\Run	chkdsk.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\H4L0CZLPKBU = "C:\\Program Files (x86)\\Wy4nh\\mfcphsd.exe"	chkdsk.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

dialer.exechkdsk.exe

description	pid	process	target process
PID 1768 set thread context of 1244	1768	dialer.exe	Explorer.EXE
PID 1812 set thread context of 1244	1812	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)\Wy4nh\mfcphsd.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)\Wy4nh\mfcphsd.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-1-5-21-2455352368-1077083310-2879168483-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	chkdsk.exe

Suspicious behavior: EnumeratesProcesses 23 IoCs

Processes:

dialer.exechkdsk.exe

pid	process
1768	dialer.exe
1768	dialer.exe
1812	chkdsk.exe
1812	chkdsk.exe
1812	chkdsk.exe
1812	chkdsk.exe
1812	chkdsk.exe
1812	chkdsk.exe
1812	chkdsk.exe
1812	chkdsk.exe
1812	chkdsk.exe
1812	chkdsk.exe
1812	chkdsk.exe
1812	chkdsk.exe
1812	chkdsk.exe
1812	chkdsk.exe
1812	chkdsk.exe
1812	chkdsk.exe
1812	chkdsk.exe
1812	chkdsk.exe
1812	chkdsk.exe
1812	chkdsk.exe
1812	chkdsk.exe

Suspicious behavior: MapViewOfSection 7 IoCs

Processes:

dialer.exechkdsk.exe

pid process

1768 dialer.exe
1768 dialer.exe
1768 dialer.exe
1812 chkdsk.exe
1812 chkdsk.exe
1812 chkdsk.exe
1812 chkdsk.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

dialer.exechkdsk.exe

description pid process

Token: SeDebugPrivilege 1768 dialer.exe
Token: SeDebugPrivilege 1812 chkdsk.exe
Suspicious use of FindShellTrayWindow 4 IoCs

Processes:

Explorer.EXE

pid process

1244 Explorer.EXE
1244 Explorer.EXE
1244 Explorer.EXE
1244 Explorer.EXE
Suspicious use of SendNotifyMessage 4 IoCs

Processes:

Explorer.EXE

pid process

1244 Explorer.EXE
1244 Explorer.EXE
1244 Explorer.EXE
1244 Explorer.EXE

description	pid	process
Token: SeDebugPrivilege	1768	dialer.exe
Token: SeDebugPrivilege	1812	chkdsk.exe

pid	process
1244	Explorer.EXE
1244	Explorer.EXE
1244	Explorer.EXE
1244	Explorer.EXE

pid	process
1244	Explorer.EXE
1244	Explorer.EXE
1244	Explorer.EXE
1244	Explorer.EXE

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

New order list.exeExplorer.EXEchkdsk.exe

description	pid	process	target process
PID 1632 wrote to memory of 1768	1632	New order list.exe	dialer.exe
PID 1632 wrote to memory of 1768	1632	New order list.exe	dialer.exe
PID 1632 wrote to memory of 1768	1632	New order list.exe	dialer.exe
PID 1632 wrote to memory of 1768	1632	New order list.exe	dialer.exe
PID 1632 wrote to memory of 1768	1632	New order list.exe	dialer.exe
PID 1632 wrote to memory of 1768	1632	New order list.exe	dialer.exe
PID 1632 wrote to memory of 1768	1632	New order list.exe	dialer.exe
PID 1244 wrote to memory of 1812	1244	Explorer.EXE	chkdsk.exe
PID 1244 wrote to memory of 1812	1244	Explorer.EXE	chkdsk.exe
PID 1244 wrote to memory of 1812	1244	Explorer.EXE	chkdsk.exe
PID 1244 wrote to memory of 1812	1244	Explorer.EXE	chkdsk.exe
PID 1812 wrote to memory of 928	1812	chkdsk.exe	cmd.exe
PID 1812 wrote to memory of 928	1812	chkdsk.exe	cmd.exe
PID 1812 wrote to memory of 928	1812	chkdsk.exe	cmd.exe
PID 1812 wrote to memory of 928	1812	chkdsk.exe	cmd.exe
PID 1812 wrote to memory of 1816	1812	chkdsk.exe	Firefox.exe
PID 1812 wrote to memory of 1816	1812	chkdsk.exe	Firefox.exe
PID 1812 wrote to memory of 1816	1812	chkdsk.exe	Firefox.exe
PID 1812 wrote to memory of 1816	1812	chkdsk.exe	Firefox.exe
PID 1812 wrote to memory of 1816	1812	chkdsk.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:1244
- C:\Users\Admin\AppData\Local\Temp\New order list.exe
  "C:\Users\Admin\AppData\Local\Temp\New order list.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1632
- - 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:1768
- C:\Windows\SysWOW64\chkdsk.exe
  "C:\Windows\SysWOW64\chkdsk.exe"
  2⤵
  - Adds 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:1812
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Windows\SysWOW64\dialer.exe"
    3⤵
    PID:928
- - C:\Program Files\Mozilla Firefox\Firefox.exe
    "C:\Program Files\Mozilla Firefox\Firefox.exe"
    3⤵
    PID:1816

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/928-70-0x0000000000000000-mapping.dmp

Download
memory/1244-75-0x0000000004FC0000-0x000000000514D000-memory.dmp

Filesize
1.6MB

Download
memory/1244-68-0x0000000004E20000-0x0000000004FBD000-memory.dmp

Filesize
1.6MB

Download
memory/1632-61-0x0000000000230000-0x0000000000231000-memory.dmp

Filesize
4KB

Download
memory/1632-60-0x0000000075551000-0x0000000075553000-memory.dmp

Filesize
8KB

Download
memory/1768-62-0x0000000000000000-mapping.dmp

Download
memory/1768-64-0x0000000000090000-0x0000000000091000-memory.dmp

Filesize
4KB

Download
memory/1768-65-0x0000000000230000-0x0000000000244000-memory.dmp

Filesize
80KB

Download
memory/1768-66-0x0000000010410000-0x000000001043D000-memory.dmp

Filesize
180KB

Download
memory/1768-67-0x00000000020E0000-0x00000000023E3000-memory.dmp

Filesize
3.0MB

Download
memory/1812-69-0x0000000000000000-mapping.dmp

Download
memory/1812-72-0x00000000000C0000-0x00000000000ED000-memory.dmp

Filesize
180KB

Download
memory/1812-73-0x0000000001F90000-0x0000000002293000-memory.dmp

Filesize
3.0MB

Download
memory/1812-74-0x0000000001E00000-0x0000000001E93000-memory.dmp

Filesize
588KB

Download
memory/1812-71-0x0000000000460000-0x0000000000467000-memory.dmp

Filesize
28KB

Download
memory/1816-77-0x0000000000000000-mapping.dmp

Download
memory/1816-78-0x000000013FD70000-0x000000013FE03000-memory.dmp

Filesize
588KB

Download
memory/1816-79-0x0000000000060000-0x00000000001A4000-memory.dmp

Filesize
1.3MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads