formbook | 729b60f2006a096d775e891d0f083927f301cccd8fd5fcd1726c4c65f3cabd44

General

Target

DHLSHIPPINGDOCSMAWB60733268616HAWBFRA27756732ADSBPO202422070.exe
Size

1.2MB
MD5

9c3fbbedcc5f9f68c4b1a4d8b63d569f
SHA1

b5e1020fc531bbb3bd330866b4498344397ec8f2
SHA256

729b60f2006a096d775e891d0f083927f301cccd8fd5fcd1726c4c65f3cabd44
SHA512

aaf7e60caacefe5087e3b3f16e92253c9f003e4eb0a06a1226d96baf010c7a1e77b985ba6e5754fe497314cf910cdac56175d8b07e8ec7136d7207c490070325
SSDEEP

24576:lCdxte/80jYLT3U1jfsWaTXcFNCGvDpbJ/Sg+OhhLuMCQ:sw80cTsjkWaTXcyGxJJ+ObLH

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/2508-22-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2508-25-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2876-30-0x0000000000080000-0x00000000000AF000-memory.dmp	formbook

Drops startup file 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\reindulgence.vbs	reindulgence.exe

Executes dropped EXE 1 IoCs

pid	Process
2728	reindulgence.exe

Loads dropped DLL 1 IoCs

pid	Process
2600	DHLSHIPPINGDOCSMAWB60733268616HAWBFRA27756732ADSBPO202422070.exe

AutoIT Executable 1 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral1/files/0x00070000000192f0-8.dat	autoit_exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2728 set thread context of 2508	2728	reindulgence.exe	31
PID 2508 set thread context of 1208	2508	svchost.exe	21
PID 2876 set thread context of 1208	2876	chkdsk.exe	21

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	DHLSHIPPINGDOCSMAWB60733268616HAWBFRA27756732ADSBPO202422070.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reindulgence.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	chkdsk.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
2600	DHLSHIPPINGDOCSMAWB60733268616HAWBFRA27756732ADSBPO202422070.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
2508	svchost.exe
2508	svchost.exe
2876	chkdsk.exe
2876	chkdsk.exe
2876	chkdsk.exe
2876	chkdsk.exe
2876	chkdsk.exe
2876	chkdsk.exe
2876	chkdsk.exe
2876	chkdsk.exe
2876	chkdsk.exe
2876	chkdsk.exe
2876	chkdsk.exe
2876	chkdsk.exe
2876	chkdsk.exe
2876	chkdsk.exe
2876	chkdsk.exe
2876	chkdsk.exe
2876	chkdsk.exe
2876	chkdsk.exe
2876	chkdsk.exe
2876	chkdsk.exe
2876	chkdsk.exe
2876	chkdsk.exe
2876	chkdsk.exe
2876	chkdsk.exe
2876	chkdsk.exe
2876	chkdsk.exe
2876	chkdsk.exe
2876	chkdsk.exe
2876	chkdsk.exe

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
2728	reindulgence.exe
2508	svchost.exe
2508	svchost.exe
2508	svchost.exe
2876	chkdsk.exe
2876	chkdsk.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2508	svchost.exe
Token: SeDebugPrivilege	2876	chkdsk.exe

Suspicious use of FindShellTrayWindow 6 IoCs

pid	Process
2600	DHLSHIPPINGDOCSMAWB60733268616HAWBFRA27756732ADSBPO202422070.exe
2600	DHLSHIPPINGDOCSMAWB60733268616HAWBFRA27756732ADSBPO202422070.exe
2728	reindulgence.exe
2728	reindulgence.exe
1208	Explorer.EXE
1208	Explorer.EXE

Suspicious use of SendNotifyMessage 4 IoCs

pid	Process
2600	DHLSHIPPINGDOCSMAWB60733268616HAWBFRA27756732ADSBPO202422070.exe
2600	DHLSHIPPINGDOCSMAWB60733268616HAWBFRA27756732ADSBPO202422070.exe
2728	reindulgence.exe
2728	reindulgence.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 2600 wrote to memory of 2728	2600	DHLSHIPPINGDOCSMAWB60733268616HAWBFRA27756732ADSBPO202422070.exe	30
PID 2600 wrote to memory of 2728	2600	DHLSHIPPINGDOCSMAWB60733268616HAWBFRA27756732ADSBPO202422070.exe	30
PID 2600 wrote to memory of 2728	2600	DHLSHIPPINGDOCSMAWB60733268616HAWBFRA27756732ADSBPO202422070.exe	30
PID 2600 wrote to memory of 2728	2600	DHLSHIPPINGDOCSMAWB60733268616HAWBFRA27756732ADSBPO202422070.exe	30
PID 2728 wrote to memory of 2508	2728	reindulgence.exe	31
PID 2728 wrote to memory of 2508	2728	reindulgence.exe	31
PID 2728 wrote to memory of 2508	2728	reindulgence.exe	31
PID 2728 wrote to memory of 2508	2728	reindulgence.exe	31
PID 2728 wrote to memory of 2508	2728	reindulgence.exe	31
PID 1208 wrote to memory of 2876	1208	Explorer.EXE	32
PID 1208 wrote to memory of 2876	1208	Explorer.EXE	32
PID 1208 wrote to memory of 2876	1208	Explorer.EXE	32
PID 1208 wrote to memory of 2876	1208	Explorer.EXE	32
PID 2876 wrote to memory of 2748	2876	chkdsk.exe	33
PID 2876 wrote to memory of 2748	2876	chkdsk.exe	33
PID 2876 wrote to memory of 2748	2876	chkdsk.exe	33
PID 2876 wrote to memory of 2748	2876	chkdsk.exe	33

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:1208
- C:\Users\Admin\AppData\Local\Temp\DHLSHIPPINGDOCSMAWB60733268616HAWBFRA27756732ADSBPO202422070.exe
  "C:\Users\Admin\AppData\Local\Temp\DHLSHIPPINGDOCSMAWB60733268616HAWBFRA27756732ADSBPO202422070.exe"
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of WriteProcessMemory
  PID:2600
- - C:\Users\Admin\AppData\Local\lustring\reindulgence.exe
    "C:\Users\Admin\AppData\Local\Temp\DHLSHIPPINGDOCSMAWB60733268616HAWBFRA27756732ADSBPO202422070.exe"
    3⤵
    - Drops startup file
    - Executes dropped EXE
    - 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:2728
  - - C:\Windows\SysWOW64\svchost.exe
      "C:\Users\Admin\AppData\Local\Temp\DHLSHIPPINGDOCSMAWB60733268616HAWBFRA27756732ADSBPO202422070.exe"
      4⤵
      Suspicious use of SetThreadContext
      Suspicious behavior: EnumeratesProcesses
      Suspicious behavior: MapViewOfSection
      Suspicious use of AdjustPrivilegeToken
      PID:2508
- 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:2876
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Windows\SysWOW64\svchost.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2748

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

System Network Configuration Discovery

1

T1016

Internet Connection Discovery

1

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

\Users\Admin\AppData\Local\lustring\reindulgence.exe

Filesize
1.2MB

MD5
9c3fbbedcc5f9f68c4b1a4d8b63d569f

SHA1
b5e1020fc531bbb3bd330866b4498344397ec8f2

SHA256
729b60f2006a096d775e891d0f083927f301cccd8fd5fcd1726c4c65f3cabd44

SHA512
aaf7e60caacefe5087e3b3f16e92253c9f003e4eb0a06a1226d96baf010c7a1e77b985ba6e5754fe497314cf910cdac56175d8b07e8ec7136d7207c490070325

Download Submit
memory/1208-27-0x0000000007790000-0x0000000007933000-memory.dmp

Filesize
1.6MB

Download
memory/1208-40-0x0000000005220000-0x000000000536F000-memory.dmp

Filesize
1.3MB

Download
memory/1208-38-0x0000000005220000-0x000000000536F000-memory.dmp

Filesize
1.3MB

Download
memory/1208-37-0x0000000005220000-0x000000000536F000-memory.dmp

Filesize
1.3MB

Download
memory/1208-31-0x0000000007790000-0x0000000007933000-memory.dmp

Filesize
1.6MB

Download
memory/2508-22-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2508-25-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2508-26-0x0000000000130000-0x0000000000144000-memory.dmp

Filesize
80KB

Download
memory/2508-23-0x0000000000860000-0x0000000000B63000-memory.dmp

Filesize
3.0MB

Download
memory/2600-6-0x00000000008E0000-0x0000000000CE0000-memory.dmp

Filesize
4.0MB

Download
memory/2728-20-0x00000000006F0000-0x0000000000AF0000-memory.dmp

Filesize
4.0MB

Download
memory/2876-28-0x00000000002A0000-0x00000000002A7000-memory.dmp

Filesize
28KB

Download
memory/2876-29-0x00000000002A0000-0x00000000002A7000-memory.dmp

Filesize
28KB

Download
memory/2876-30-0x0000000000080000-0x00000000000AF000-memory.dmp

Filesize
188KB

Download

Analysis

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