formbook | 2f1f6bee630ceab483495b681e2468e018f6a9f2f28842d9ac7b40cf1e621f08

General

Target

MalwareBazaar.exe
Size

1.1MB
MD5

dca3f0ad0eaa9ed5eabfab13b8e5e72c
SHA1

2db545db06211a8dd2317e9e08b5fdfc3431ca28
SHA256

2f1f6bee630ceab483495b681e2468e018f6a9f2f28842d9ac7b40cf1e621f08
SHA512

21b1e786096e88434320020c13eef11e18c73d8b2d115425e731391a28c15739f3d55532cf08cb5d53fe7c2e5dae58a016d3202aeb7362a45e8520ce1cb38e61
SSDEEP

24576:KqDEvCTbMWu7rQYlBQcBiT6rprG8aw9tMmI3fHsDbo:KTvC/MTQYxsWR7aw9emI/2

Score

10^/10

formbook lm31 discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

lm31

Decoy

dr-shahmoradi.com

mogu.live

antoni-tapies.com

fhwz79.com

worldskillscompetition.com

521b421.com

jinchenlan.com

beenprintin.com

easysnatch.store

cepatsukses.pro

yepyepper.com

privateschoolwichita.com

vanguardartisan.com

hbvc.xyz

17eclbet.com

loki360store.com

greatfinland.com

pranaimed.com

20587.asia

stelariptv.com

Signatures

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

Formbook payload 4 IoCs

rat

resource	yara_rule
behavioral1/memory/2512-12-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2512-16-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2512-20-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2804-25-0x0000000000080000-0x00000000000AF000-memory.dmp	formbook

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 1640 set thread context of 2512	1640	MalwareBazaar.exe	30
PID 2512 set thread context of 1136	2512	svchost.exe	20
PID 2512 set thread context of 1136	2512	svchost.exe	20
PID 2804 set thread context of 1136	2804	chkdsk.exe	20

System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	chkdsk.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	MalwareBazaar.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

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 30 IoCs

pid	Process
2512	svchost.exe
2512	svchost.exe
2512	svchost.exe
2804	chkdsk.exe
2804	chkdsk.exe
2804	chkdsk.exe
2804	chkdsk.exe
2804	chkdsk.exe
2804	chkdsk.exe
2804	chkdsk.exe
2804	chkdsk.exe
2804	chkdsk.exe
2804	chkdsk.exe
2804	chkdsk.exe
2804	chkdsk.exe
2804	chkdsk.exe
2804	chkdsk.exe
2804	chkdsk.exe
2804	chkdsk.exe
2804	chkdsk.exe
2804	chkdsk.exe
2804	chkdsk.exe
2804	chkdsk.exe
2804	chkdsk.exe
2804	chkdsk.exe
2804	chkdsk.exe
2804	chkdsk.exe
2804	chkdsk.exe
2804	chkdsk.exe
2804	chkdsk.exe

Suspicious behavior: MapViewOfSection 7 IoCs

pid	Process
1640	MalwareBazaar.exe
2512	svchost.exe
2512	svchost.exe
2512	svchost.exe
2512	svchost.exe
2804	chkdsk.exe
2804	chkdsk.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2512	svchost.exe
Token: SeDebugPrivilege	2804	chkdsk.exe

Suspicious use of FindShellTrayWindow 6 IoCs

pid	Process
1640	MalwareBazaar.exe
1640	MalwareBazaar.exe
1136	Explorer.EXE
1136	Explorer.EXE
1136	Explorer.EXE
1136	Explorer.EXE

Suspicious use of SendNotifyMessage 4 IoCs

pid	Process
1640	MalwareBazaar.exe
1640	MalwareBazaar.exe
1136	Explorer.EXE
1136	Explorer.EXE

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 1640 wrote to memory of 2512	1640	MalwareBazaar.exe	30
PID 1640 wrote to memory of 2512	1640	MalwareBazaar.exe	30
PID 1640 wrote to memory of 2512	1640	MalwareBazaar.exe	30
PID 1640 wrote to memory of 2512	1640	MalwareBazaar.exe	30
PID 1640 wrote to memory of 2512	1640	MalwareBazaar.exe	30
PID 2512 wrote to memory of 2804	2512	svchost.exe	32
PID 2512 wrote to memory of 2804	2512	svchost.exe	32
PID 2512 wrote to memory of 2804	2512	svchost.exe	32
PID 2512 wrote to memory of 2804	2512	svchost.exe	32
PID 2804 wrote to memory of 3008	2804	chkdsk.exe	33
PID 2804 wrote to memory of 3008	2804	chkdsk.exe	33
PID 2804 wrote to memory of 3008	2804	chkdsk.exe	33
PID 2804 wrote to memory of 3008	2804	chkdsk.exe	33

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:1136
- C:\Users\Admin\AppData\Local\Temp\MalwareBazaar.exe
  "C:\Users\Admin\AppData\Local\Temp\MalwareBazaar.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of WriteProcessMemory
  PID:1640
- - C:\Windows\SysWOW64\svchost.exe
    "C:\Users\Admin\AppData\Local\Temp\MalwareBazaar.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:2512
  - - C:\Windows\SysWOW64\chkdsk.exe
      "C:\Windows\SysWOW64\chkdsk.exe"
      4⤵
      Suspicious use of SetThreadContext
      System Location Discovery: System Language Discovery
      Enumerates system info in registry
      Suspicious behavior: EnumeratesProcesses
      Suspicious behavior: MapViewOfSection
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:2804
    - - C:\Windows\SysWOW64\cmd.exe
        
        /c del "C:\Windows\SysWOW64\svchost.exe"
        5⤵
        System Location Discovery: System Language Discovery
        
        PID:3008

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1136-34-0x00000000079A0000-0x0000000007ADA000-memory.dmp

Filesize
1.2MB

Download
memory/1136-31-0x00000000079A0000-0x0000000007ADA000-memory.dmp

Filesize
1.2MB

Download
memory/1136-17-0x0000000006FE0000-0x0000000007100000-memory.dmp

Filesize
1.1MB

Download
memory/1136-30-0x00000000079A0000-0x0000000007ADA000-memory.dmp

Filesize
1.2MB

Download
memory/1136-26-0x0000000007820000-0x000000000799A000-memory.dmp

Filesize
1.5MB

Download
memory/1136-19-0x0000000006FE0000-0x0000000007100000-memory.dmp

Filesize
1.1MB

Download
memory/1136-22-0x0000000007820000-0x000000000799A000-memory.dmp

Filesize
1.5MB

Download
memory/1640-11-0x0000000000710000-0x0000000000714000-memory.dmp

Filesize
16KB

Download
memory/2512-21-0x00000000001D0000-0x00000000001E4000-memory.dmp

Filesize
80KB

Download
memory/2512-20-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2512-15-0x0000000000180000-0x0000000000194000-memory.dmp

Filesize
80KB

Download
memory/2512-16-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2512-14-0x0000000000910000-0x0000000000C13000-memory.dmp

Filesize
3.0MB

Download
memory/2512-12-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2804-23-0x0000000000310000-0x0000000000317000-memory.dmp

Filesize
28KB

Download
memory/2804-24-0x0000000000310000-0x0000000000317000-memory.dmp

Filesize
28KB

Download
memory/2804-25-0x0000000000080000-0x00000000000AF000-memory.dmp

Filesize
188KB

Download

Analysis

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