formbook | 0526bafb475af9a866422938635fd54ffe5fc640e8163b77a54b0e9b7d222b11

General

Target

employee Performance.exe
Size

1.1MB
MD5

ef7277271a100eb71de288aad59a405a
SHA1

07c4baaaa251f6da787ab41bf56516d4d977b758
SHA256

63366a01b2ab67323933f03ee2da752572ec8f70578905646806abf3f9b655d2
SHA512

5deb43f45505ce586d8513b2622641664d0e66f3d4a70f760b73bce380d3869b1e9a6d23dc8ea14c23e31a2ad4c7f05a4b73c28c97cca87c1cc84d8b35d0d0bc
SSDEEP

24576:oAHnh+eWsN3skA4RV1Hom2KXMmHaBJPGrb0vBzE75:vh+ZkldoPK8YaBJPGcJzc

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/1888-12-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/1888-16-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/1888-20-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2828-26-0x00000000000C0000-0x00000000000EF000-memory.dmp	formbook

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 1644 set thread context of 1888	1644	employee Performance.exe	30
PID 1888 set thread context of 1304	1888	svchost.exe	21
PID 1888 set thread context of 1304	1888	svchost.exe	21
PID 2828 set thread context of 1304	2828	NAPSTAT.EXE	21

System Location Discovery: System Language Discovery 1 TTPs 3 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	employee Performance.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	NAPSTAT.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious behavior: EnumeratesProcesses 31 IoCs

pid	Process
1888	svchost.exe
1888	svchost.exe
1888	svchost.exe
2828	NAPSTAT.EXE
2828	NAPSTAT.EXE
2828	NAPSTAT.EXE
2828	NAPSTAT.EXE
2828	NAPSTAT.EXE
2828	NAPSTAT.EXE
2828	NAPSTAT.EXE
2828	NAPSTAT.EXE
2828	NAPSTAT.EXE
2828	NAPSTAT.EXE
2828	NAPSTAT.EXE
2828	NAPSTAT.EXE
2828	NAPSTAT.EXE
2828	NAPSTAT.EXE
2828	NAPSTAT.EXE
2828	NAPSTAT.EXE
2828	NAPSTAT.EXE
2828	NAPSTAT.EXE
2828	NAPSTAT.EXE
2828	NAPSTAT.EXE
2828	NAPSTAT.EXE
2828	NAPSTAT.EXE
2828	NAPSTAT.EXE
2828	NAPSTAT.EXE
2828	NAPSTAT.EXE
2828	NAPSTAT.EXE
2828	NAPSTAT.EXE
2828	NAPSTAT.EXE

Suspicious behavior: MapViewOfSection 7 IoCs

pid	Process
1644	employee Performance.exe
1888	svchost.exe
1888	svchost.exe
1888	svchost.exe
1888	svchost.exe
2828	NAPSTAT.EXE
2828	NAPSTAT.EXE

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1888	svchost.exe
Token: SeDebugPrivilege	2828	NAPSTAT.EXE

Suspicious use of FindShellTrayWindow 4 IoCs

pid	Process
1644	employee Performance.exe
1644	employee Performance.exe
1304	Explorer.EXE
1304	Explorer.EXE

Suspicious use of SendNotifyMessage 2 IoCs

pid	Process
1644	employee Performance.exe
1644	employee Performance.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 1644 wrote to memory of 1888	1644	employee Performance.exe	30
PID 1644 wrote to memory of 1888	1644	employee Performance.exe	30
PID 1644 wrote to memory of 1888	1644	employee Performance.exe	30
PID 1644 wrote to memory of 1888	1644	employee Performance.exe	30
PID 1644 wrote to memory of 1888	1644	employee Performance.exe	30
PID 1304 wrote to memory of 2828	1304	Explorer.EXE	31
PID 1304 wrote to memory of 2828	1304	Explorer.EXE	31
PID 1304 wrote to memory of 2828	1304	Explorer.EXE	31
PID 1304 wrote to memory of 2828	1304	Explorer.EXE	31
PID 2828 wrote to memory of 3008	2828	NAPSTAT.EXE	32
PID 2828 wrote to memory of 3008	2828	NAPSTAT.EXE	32
PID 2828 wrote to memory of 3008	2828	NAPSTAT.EXE	32
PID 2828 wrote to memory of 3008	2828	NAPSTAT.EXE	32

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:1304
- C:\Users\Admin\AppData\Local\Temp\employee Performance.exe
  "C:\Users\Admin\AppData\Local\Temp\employee Performance.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:1644
- - C:\Windows\SysWOW64\svchost.exe
    "C:\Users\Admin\AppData\Local\Temp\employee Performance.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:1888
- C:\Windows\SysWOW64\NAPSTAT.EXE
  "C:\Windows\SysWOW64\NAPSTAT.EXE"
  2⤵
  - 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:2828
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Windows\SysWOW64\svchost.exe"
    3⤵
    - 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

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/1304-29-0x0000000007310000-0x000000000747A000-memory.dmp

Filesize
1.4MB

Download
memory/1304-37-0x0000000007760000-0x0000000007853000-memory.dmp

Filesize
972KB

Download
memory/1304-34-0x0000000007760000-0x0000000007853000-memory.dmp

Filesize
972KB

Download
memory/1304-32-0x0000000007760000-0x0000000007853000-memory.dmp

Filesize
972KB

Download
memory/1304-17-0x0000000006E70000-0x0000000006F76000-memory.dmp

Filesize
1.0MB

Download
memory/1304-22-0x0000000007310000-0x000000000747A000-memory.dmp

Filesize
1.4MB

Download
memory/1644-11-0x0000000000120000-0x0000000000124000-memory.dmp

Filesize
16KB

Download
memory/1888-14-0x0000000000A80000-0x0000000000D83000-memory.dmp

Filesize
3.0MB

Download
memory/1888-20-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1888-21-0x00000000002A0000-0x00000000002B4000-memory.dmp

Filesize
80KB

Download
memory/1888-15-0x0000000000210000-0x0000000000224000-memory.dmp

Filesize
80KB

Download
memory/1888-16-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1888-12-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2828-23-0x0000000000370000-0x00000000003B6000-memory.dmp

Filesize
280KB

Download
memory/2828-25-0x0000000000370000-0x00000000003B6000-memory.dmp

Filesize
280KB

Download
memory/2828-26-0x00000000000C0000-0x00000000000EF000-memory.dmp

Filesize
188KB

Download

Analysis

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