formbook | d1933850d05d345bc57356333ebe41446a5e1f7a7b09626a6906202f174852c1

Analysis

max time kernel
149s
max time network
154s
platform
windows7_x64
resource
win7v20210410
submitted
30-07-2021 15:25

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General

Target

2c7540c6d066510b73a1a5c668dc74ec6d0d3f0716bb3adb6cd83afdd07f35ff.exe
Size

614KB
MD5

028bf5bc572cf06e10c315334c397649
SHA1

cf69c58a4e35b7290af44ec658edc3582655f84d
SHA256

2c7540c6d066510b73a1a5c668dc74ec6d0d3f0716bb3adb6cd83afdd07f35ff
SHA512

cda1ba7ed4e86e60bb83bc1c71ec51c57b5f676622c3daf067d3c04e176ff2709417bc0ec2fbade98f5140e077eacffc0e54cbf1415f2c7f45caac9ce20e929c

Score

10^/10

formbook rat spyware stealer suricata trojan

Malware Config

Extracted

Family

formbook

Version

4.1

http://www.prospertraining.info/ymmi/

Decoy

terrapotencia.com

issytosou.net

samankapan.com

zzxitang.com

iapple-uk.com

robertcollinsrealtor.com

theweehero.com

jyotisagar.net

powerbi.fitness

nuoyilm.com

modelsara.com

langvietco.com

aplusroofer.com

isabelacalaca.com

bearhawk.one

exporaoverseas.com

box-appliance.com

walkingfishvod.com

onlyqna.com

feed-parser.com

Signatures

Formbook
Formbook is a data stealing malware which is capable of stealing data.
trojan spyware stealer formbook
suricata: ET MALWARE FormBook CnC Checkin (GET)
suricata

Formbook Payload 3 IoCs

rat

resource	yara_rule
behavioral14/memory/796-62-0x0000000000000000-mapping.dmp	formbook
behavioral14/memory/796-65-0x0000000010410000-0x000000001043E000-memory.dmp	formbook
behavioral14/memory/888-72-0x0000000000080000-0x00000000000AE000-memory.dmp	formbook

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 796 set thread context of 1216	796	mobsync.exe	10
PID 888 set thread context of 1216	888	chkdsk.exe	10

Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry

T1012

System Information Discovery

T1082

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

Suspicious behavior: EnumeratesProcesses 24 IoCs

pid	Process
796	mobsync.exe
796	mobsync.exe
888	chkdsk.exe
888	chkdsk.exe
888	chkdsk.exe
888	chkdsk.exe
888	chkdsk.exe
888	chkdsk.exe
888	chkdsk.exe
888	chkdsk.exe
888	chkdsk.exe
888	chkdsk.exe
888	chkdsk.exe
888	chkdsk.exe
888	chkdsk.exe
888	chkdsk.exe
888	chkdsk.exe
888	chkdsk.exe
888	chkdsk.exe
888	chkdsk.exe
888	chkdsk.exe
888	chkdsk.exe
888	chkdsk.exe
888	chkdsk.exe

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
796	mobsync.exe
796	mobsync.exe
796	mobsync.exe
888	chkdsk.exe
888	chkdsk.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	796	mobsync.exe
Token: SeDebugPrivilege	888	chkdsk.exe

Suspicious use of FindShellTrayWindow 4 IoCs

pid	Process
1216	Explorer.EXE
1216	Explorer.EXE
1216	Explorer.EXE
1216	Explorer.EXE

Suspicious use of SendNotifyMessage 4 IoCs

pid	Process
1216	Explorer.EXE
1216	Explorer.EXE
1216	Explorer.EXE
1216	Explorer.EXE

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 1360 wrote to memory of 796	1360	2c7540c6d066510b73a1a5c668dc74ec6d0d3f0716bb3adb6cd83afdd07f35ff.exe	31
PID 1360 wrote to memory of 796	1360	2c7540c6d066510b73a1a5c668dc74ec6d0d3f0716bb3adb6cd83afdd07f35ff.exe	31
PID 1360 wrote to memory of 796	1360	2c7540c6d066510b73a1a5c668dc74ec6d0d3f0716bb3adb6cd83afdd07f35ff.exe	31
PID 1360 wrote to memory of 796	1360	2c7540c6d066510b73a1a5c668dc74ec6d0d3f0716bb3adb6cd83afdd07f35ff.exe	31
PID 1360 wrote to memory of 796	1360	2c7540c6d066510b73a1a5c668dc74ec6d0d3f0716bb3adb6cd83afdd07f35ff.exe	31
PID 1360 wrote to memory of 796	1360	2c7540c6d066510b73a1a5c668dc74ec6d0d3f0716bb3adb6cd83afdd07f35ff.exe	31
PID 1360 wrote to memory of 796	1360	2c7540c6d066510b73a1a5c668dc74ec6d0d3f0716bb3adb6cd83afdd07f35ff.exe	31
PID 1216 wrote to memory of 888	1216	Explorer.EXE	32
PID 1216 wrote to memory of 888	1216	Explorer.EXE	32
PID 1216 wrote to memory of 888	1216	Explorer.EXE	32
PID 1216 wrote to memory of 888	1216	Explorer.EXE	32
PID 888 wrote to memory of 852	888	chkdsk.exe	33
PID 888 wrote to memory of 852	888	chkdsk.exe	33
PID 888 wrote to memory of 852	888	chkdsk.exe	33
PID 888 wrote to memory of 852	888	chkdsk.exe	33

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1216
- C:\Users\Admin\AppData\Local\Temp\2c7540c6d066510b73a1a5c668dc74ec6d0d3f0716bb3adb6cd83afdd07f35ff.exe
  "C:\Users\Admin\AppData\Local\Temp\2c7540c6d066510b73a1a5c668dc74ec6d0d3f0716bb3adb6cd83afdd07f35ff.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1360
- - C:\Windows\SysWOW64\mobsync.exe
    C:\Windows\System32\mobsync.exe
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:796
- 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:888
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Windows\SysWOW64\mobsync.exe"
    3⤵
    PID:852

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/796-66-0x0000000000C80000-0x0000000000F83000-memory.dmp

Filesize
3.0MB

Download
memory/796-64-0x0000000000090000-0x0000000000091000-memory.dmp

Filesize
4KB

Download
memory/796-65-0x0000000010410000-0x000000001043E000-memory.dmp

Filesize
184KB

Download
memory/796-67-0x00000000001B0000-0x00000000001C4000-memory.dmp

Filesize
80KB

Download
memory/888-71-0x0000000000830000-0x0000000000837000-memory.dmp

Filesize
28KB

Download
memory/888-72-0x0000000000080000-0x00000000000AE000-memory.dmp

Filesize
184KB

Download
memory/888-73-0x0000000001F10000-0x0000000002213000-memory.dmp

Filesize
3.0MB

Download
memory/888-74-0x0000000001D20000-0x0000000001DB3000-memory.dmp

Filesize
588KB

Download
memory/1216-68-0x0000000004CE0000-0x0000000004E35000-memory.dmp

Filesize
1.3MB

Download
memory/1216-75-0x00000000049F0000-0x0000000004AD0000-memory.dmp

Filesize
896KB

Download
memory/1360-60-0x0000000000330000-0x0000000000331000-memory.dmp

Filesize
4KB

Download
memory/1360-61-0x00000000752B1000-0x00000000752B3000-memory.dmp

Filesize
8KB

Download