formbook | 18b8be474d7df6098362d403cd7b300ba947b149d745fc316bf90756a4877bbe

General

Target

18b8be474d7df6098362d403cd7b300ba947b149d745fc316bf90756a4877bbeN.exe
Size

1.5MB
MD5

b940de1def8474541f887b550be00380
SHA1

8758f6edbf3c1f83b92300c9c8536f4989d53eeb
SHA256

18b8be474d7df6098362d403cd7b300ba947b149d745fc316bf90756a4877bbe
SHA512

259c6abcdaf385cdc6107bda2bb01a7b4fc9729650ed2b91365ea666cb09c91e8fe54397a2c53237db11f7d02b1893553dbf23c1cbebaa4c3c17267537d44004
SSDEEP

24576:JqDEvCTbMWu7rQYlBQcBiT6rprG8aT56HnRFAeI8rZNQVnjBRDI8k:JTvC/MTQYxsWR7aT5KFZNQVP

Score

10^/10

formbook k94g discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

k94g

Decoy

nstandgoz.xyz

dhd-treatment-37310.bond

13s-braces-us-ze.fun

umdona.shop

96ph803ql.bond

kka9max.net

corporate-10.xyz

edicalassistance869840.online

lobalresources-bh.xyz

3145978.xyz

ovdaawebsite.online

etting-thailand.net

icloud.xyz

poxk.shop

25ks-ls72510.cyou

women.info

iwyrfbfvhv9.asia

luratu.xyz

ffordable-power-charger.today

edanuryilmaz.xyz

Signatures

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

Formbook payload 3 IoCs

rat

resource	yara_rule
behavioral1/memory/1868-3-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/1868-7-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/1428-12-0x00000000000C0000-0x00000000000EF000-memory.dmp	formbook

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 1852 set thread context of 1868	1852	18b8be474d7df6098362d403cd7b300ba947b149d745fc316bf90756a4877bbeN.exe	31
PID 1868 set thread context of 1152	1868	svchost.exe	20
PID 1428 set thread context of 1152	1428	chkdsk.exe	20

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2344	1852	WerFault.exe	30

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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	18b8be474d7df6098362d403cd7b300ba947b149d745fc316bf90756a4877bbeN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	chkdsk.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 31 IoCs

pid	Process
1868	svchost.exe
1868	svchost.exe
1428	chkdsk.exe
1428	chkdsk.exe
1428	chkdsk.exe
1428	chkdsk.exe
1428	chkdsk.exe
1428	chkdsk.exe
1428	chkdsk.exe
1428	chkdsk.exe
1428	chkdsk.exe
1428	chkdsk.exe
1428	chkdsk.exe
1428	chkdsk.exe
1428	chkdsk.exe
1428	chkdsk.exe
1428	chkdsk.exe
1428	chkdsk.exe
1428	chkdsk.exe
1428	chkdsk.exe
1428	chkdsk.exe
1428	chkdsk.exe
1428	chkdsk.exe
1428	chkdsk.exe
1428	chkdsk.exe
1428	chkdsk.exe
1428	chkdsk.exe
1428	chkdsk.exe
1428	chkdsk.exe
1428	chkdsk.exe
1428	chkdsk.exe

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
1852	18b8be474d7df6098362d403cd7b300ba947b149d745fc316bf90756a4877bbeN.exe
1868	svchost.exe
1868	svchost.exe
1868	svchost.exe
1428	chkdsk.exe
1428	chkdsk.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1868	svchost.exe
Token: SeDebugPrivilege	1428	chkdsk.exe

Suspicious use of FindShellTrayWindow 6 IoCs

pid	Process
1852	18b8be474d7df6098362d403cd7b300ba947b149d745fc316bf90756a4877bbeN.exe
1852	18b8be474d7df6098362d403cd7b300ba947b149d745fc316bf90756a4877bbeN.exe
1152	Explorer.EXE
1152	Explorer.EXE
1152	Explorer.EXE
1152	Explorer.EXE

Suspicious use of SendNotifyMessage 4 IoCs

pid	Process
1852	18b8be474d7df6098362d403cd7b300ba947b149d745fc316bf90756a4877bbeN.exe
1852	18b8be474d7df6098362d403cd7b300ba947b149d745fc316bf90756a4877bbeN.exe
1152	Explorer.EXE
1152	Explorer.EXE

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 1852 wrote to memory of 1868	1852	18b8be474d7df6098362d403cd7b300ba947b149d745fc316bf90756a4877bbeN.exe	31
PID 1852 wrote to memory of 1868	1852	18b8be474d7df6098362d403cd7b300ba947b149d745fc316bf90756a4877bbeN.exe	31
PID 1852 wrote to memory of 1868	1852	18b8be474d7df6098362d403cd7b300ba947b149d745fc316bf90756a4877bbeN.exe	31
PID 1852 wrote to memory of 1868	1852	18b8be474d7df6098362d403cd7b300ba947b149d745fc316bf90756a4877bbeN.exe	31
PID 1852 wrote to memory of 1868	1852	18b8be474d7df6098362d403cd7b300ba947b149d745fc316bf90756a4877bbeN.exe	31
PID 1852 wrote to memory of 2344	1852	18b8be474d7df6098362d403cd7b300ba947b149d745fc316bf90756a4877bbeN.exe	32
PID 1852 wrote to memory of 2344	1852	18b8be474d7df6098362d403cd7b300ba947b149d745fc316bf90756a4877bbeN.exe	32
PID 1852 wrote to memory of 2344	1852	18b8be474d7df6098362d403cd7b300ba947b149d745fc316bf90756a4877bbeN.exe	32
PID 1852 wrote to memory of 2344	1852	18b8be474d7df6098362d403cd7b300ba947b149d745fc316bf90756a4877bbeN.exe	32
PID 1152 wrote to memory of 1428	1152	Explorer.EXE	33
PID 1152 wrote to memory of 1428	1152	Explorer.EXE	33
PID 1152 wrote to memory of 1428	1152	Explorer.EXE	33
PID 1152 wrote to memory of 1428	1152	Explorer.EXE	33
PID 1428 wrote to memory of 2664	1428	chkdsk.exe	34
PID 1428 wrote to memory of 2664	1428	chkdsk.exe	34
PID 1428 wrote to memory of 2664	1428	chkdsk.exe	34
PID 1428 wrote to memory of 2664	1428	chkdsk.exe	34

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1152
- C:\Users\Admin\AppData\Local\Temp\18b8be474d7df6098362d403cd7b300ba947b149d745fc316bf90756a4877bbeN.exe
  "C:\Users\Admin\AppData\Local\Temp\18b8be474d7df6098362d403cd7b300ba947b149d745fc316bf90756a4877bbeN.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:1852
- - C:\Windows\SysWOW64\svchost.exe
    "C:\Users\Admin\AppData\Local\Temp\18b8be474d7df6098362d403cd7b300ba947b149d745fc316bf90756a4877bbeN.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:1868
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1852 -s 312
    3⤵
    - Program crash
    PID:2344
- C:\Windows\SysWOW64\chkdsk.exe
  "C:\Windows\SysWOW64\chkdsk.exe"
  2⤵
  - 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:1428
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Windows\SysWOW64\svchost.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2664

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/1152-8-0x0000000006590000-0x0000000006675000-memory.dmp

Filesize
916KB

Download
memory/1152-21-0x0000000007060000-0x00000000071DA000-memory.dmp

Filesize
1.5MB

Download
memory/1152-19-0x0000000007060000-0x00000000071DA000-memory.dmp

Filesize
1.5MB

Download
memory/1152-18-0x0000000007060000-0x00000000071DA000-memory.dmp

Filesize
1.5MB

Download
memory/1152-13-0x0000000006590000-0x0000000006675000-memory.dmp

Filesize
916KB

Download
memory/1428-12-0x00000000000C0000-0x00000000000EF000-memory.dmp

Filesize
188KB

Download
memory/1428-9-0x0000000000D00000-0x0000000000D07000-memory.dmp

Filesize
28KB

Download
memory/1428-10-0x0000000000D00000-0x0000000000D07000-memory.dmp

Filesize
28KB

Download
memory/1852-11-0x00000000029A0000-0x0000000002BA0000-memory.dmp

Filesize
2.0MB

Download
memory/1852-2-0x00000000029A0000-0x0000000002BA0000-memory.dmp

Filesize
2.0MB

Download
memory/1868-4-0x0000000000A80000-0x0000000000D83000-memory.dmp

Filesize
3.0MB

Download
memory/1868-6-0x0000000000190000-0x00000000001A4000-memory.dmp

Filesize
80KB

Download
memory/1868-7-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1868-3-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download

Analysis

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