formbook | 86d8d6d1a90c7511163ba9c3977035bbba1f834363d1baa93df28ed2ac45ce5b

Analysis

max time kernel
147s
max time network
139s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
30-12-2024 04:18

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General

Target

jets4431.exe
Size

1.1MB
MD5

71415d61dd3a653e017514280a4e05c4
SHA1

89bed5f613401c5816f3b22816f84d5f8067db3b
SHA256

3ab1cc60bd5dca00fc6cad5cf3c0a7cccea610b20027c9db6b45f0b41860fba5
SHA512

971407b4327c3a9fe1ff76f0ec84874522865ae08f338ec0985a1ef78066a59412d323a4a2731d33dec129c89355b7aa95fe36f4425db8ad6ea1151f5b9c2098
SSDEEP

24576:UAOcZXcxP61ptWw+avL8pnp3qY7daGAuvZG31RMaas/xmR:CH+tWw+S8D3r70QA3XM9n

Score

10^/10

formbook je14 discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

je14

Decoy

innervisionbuildings.com

theenergysocialite.com

565548.com

panghr.com

onlyonesolutions.com

stjohnzone6.com

cnotes.rest

helfeb.online

xixi-s-inc.club

easilyentered.com

theshopx.store

mrclean-ac.com

miamibeachwateradventures.com

jpearce.co.uk

seseragi-bunkou.com

minimaddie.com

commbank-help-849c3.com

segohandelsonderneming.com

namthanhreal.com

fototerapi.online

Signatures

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

Formbook payload 3 IoCs

rat

resource	yara_rule
behavioral1/memory/332-73-0x0000000000400000-0x0000000000999000-memory.dmp	formbook
behavioral1/memory/484-69-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2196-81-0x0000000000080000-0x00000000000AF000-memory.dmp	formbook

Executes dropped EXE 1 IoCs

pid	Process
2624	estrlf.pif

Loads dropped DLL 4 IoCs

pid	Process
2716	jets4431.exe
2716	jets4431.exe
2716	jets4431.exe
2716	jets4431.exe

Suspicious use of SetThreadContext 5 IoCs

description	pid	Process	procid_target
PID 2624 set thread context of 484	2624	estrlf.pif	32
PID 2624 set thread context of 332	2624	estrlf.pif	31
PID 484 set thread context of 1196	484	RegSvcs.exe	21
PID 332 set thread context of 1196	332	RegSvcs.exe	21
PID 2196 set thread context of 1196	2196	NETSTAT.EXE	21

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 5 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	estrlf.pif
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	NETSTAT.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wuapp.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	jets4431.exe

Gathers network information 2 TTPs 1 IoCs

Uses commandline utility to view network configuration.

System Information Discovery

T1082

Command and Scripting Interpreter

T1059

pid	Process
2196	NETSTAT.EXE

Suspicious behavior: EnumeratesProcesses 34 IoCs

pid	Process
484	RegSvcs.exe
332	RegSvcs.exe
484	RegSvcs.exe
332	RegSvcs.exe
2196	NETSTAT.EXE
2560	wuapp.exe
2196	NETSTAT.EXE
2196	NETSTAT.EXE
2196	NETSTAT.EXE
2196	NETSTAT.EXE
2196	NETSTAT.EXE
2196	NETSTAT.EXE
2196	NETSTAT.EXE
2196	NETSTAT.EXE
2196	NETSTAT.EXE
2196	NETSTAT.EXE
2196	NETSTAT.EXE
2196	NETSTAT.EXE
2196	NETSTAT.EXE
2196	NETSTAT.EXE
2196	NETSTAT.EXE
2196	NETSTAT.EXE
2196	NETSTAT.EXE
2196	NETSTAT.EXE
2196	NETSTAT.EXE
2196	NETSTAT.EXE
2196	NETSTAT.EXE
2196	NETSTAT.EXE
2196	NETSTAT.EXE
2196	NETSTAT.EXE
2196	NETSTAT.EXE
2196	NETSTAT.EXE
2196	NETSTAT.EXE
2196	NETSTAT.EXE

Suspicious behavior: MapViewOfSection 8 IoCs

pid	Process
484	RegSvcs.exe
332	RegSvcs.exe
484	RegSvcs.exe
484	RegSvcs.exe
332	RegSvcs.exe
332	RegSvcs.exe
2196	NETSTAT.EXE
2196	NETSTAT.EXE

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	484	RegSvcs.exe
Token: SeDebugPrivilege	332	RegSvcs.exe
Token: SeDebugPrivilege	2196	NETSTAT.EXE
Token: SeDebugPrivilege	2560	wuapp.exe

Suspicious use of WriteProcessMemory 41 IoCs

description	pid	Process	procid_target
PID 2716 wrote to memory of 2624	2716	jets4431.exe	30
PID 2716 wrote to memory of 2624	2716	jets4431.exe	30
PID 2716 wrote to memory of 2624	2716	jets4431.exe	30
PID 2716 wrote to memory of 2624	2716	jets4431.exe	30
PID 2716 wrote to memory of 2624	2716	jets4431.exe	30
PID 2716 wrote to memory of 2624	2716	jets4431.exe	30
PID 2716 wrote to memory of 2624	2716	jets4431.exe	30
PID 2624 wrote to memory of 332	2624	estrlf.pif	31
PID 2624 wrote to memory of 332	2624	estrlf.pif	31
PID 2624 wrote to memory of 332	2624	estrlf.pif	31
PID 2624 wrote to memory of 332	2624	estrlf.pif	31
PID 2624 wrote to memory of 332	2624	estrlf.pif	31
PID 2624 wrote to memory of 332	2624	estrlf.pif	31
PID 2624 wrote to memory of 332	2624	estrlf.pif	31
PID 2624 wrote to memory of 484	2624	estrlf.pif	32
PID 2624 wrote to memory of 484	2624	estrlf.pif	32
PID 2624 wrote to memory of 484	2624	estrlf.pif	32
PID 2624 wrote to memory of 484	2624	estrlf.pif	32
PID 2624 wrote to memory of 484	2624	estrlf.pif	32
PID 2624 wrote to memory of 484	2624	estrlf.pif	32
PID 2624 wrote to memory of 484	2624	estrlf.pif	32
PID 2624 wrote to memory of 484	2624	estrlf.pif	32
PID 2624 wrote to memory of 484	2624	estrlf.pif	32
PID 2624 wrote to memory of 484	2624	estrlf.pif	32
PID 2624 wrote to memory of 332	2624	estrlf.pif	31
PID 2624 wrote to memory of 332	2624	estrlf.pif	31
PID 1196 wrote to memory of 2196	1196	Explorer.EXE	33
PID 1196 wrote to memory of 2196	1196	Explorer.EXE	33
PID 1196 wrote to memory of 2196	1196	Explorer.EXE	33
PID 1196 wrote to memory of 2196	1196	Explorer.EXE	33
PID 1196 wrote to memory of 2560	1196	Explorer.EXE	45
PID 1196 wrote to memory of 2560	1196	Explorer.EXE	45
PID 1196 wrote to memory of 2560	1196	Explorer.EXE	45
PID 1196 wrote to memory of 2560	1196	Explorer.EXE	45
PID 1196 wrote to memory of 2560	1196	Explorer.EXE	45
PID 1196 wrote to memory of 2560	1196	Explorer.EXE	45
PID 1196 wrote to memory of 2560	1196	Explorer.EXE	45
PID 2196 wrote to memory of 2860	2196	NETSTAT.EXE	46
PID 2196 wrote to memory of 2860	2196	NETSTAT.EXE	46
PID 2196 wrote to memory of 2860	2196	NETSTAT.EXE	46
PID 2196 wrote to memory of 2860	2196	NETSTAT.EXE	46

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1196
- C:\Users\Admin\AppData\Local\Temp\jets4431.exe
  "C:\Users\Admin\AppData\Local\Temp\jets4431.exe"
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2716
- - C:\Users\Admin\AppData\Roaming\5_29\estrlf.pif
    "C:\Users\Admin\AppData\Roaming\5_29\estrlf.pif" tvsgb.tls
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2624
  - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
      4⤵
      Suspicious use of SetThreadContext
      Suspicious behavior: EnumeratesProcesses
      Suspicious behavior: MapViewOfSection
      Suspicious use of AdjustPrivilegeToken
      PID:332
  - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
      4⤵
      Suspicious use of SetThreadContext
      Suspicious behavior: EnumeratesProcesses
      Suspicious behavior: MapViewOfSection
      Suspicious use of AdjustPrivilegeToken
      PID:484
- C:\Windows\SysWOW64\NETSTAT.EXE
  "C:\Windows\SysWOW64\NETSTAT.EXE"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Gathers network information
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2196
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2860
- C:\Windows\SysWOW64\autofmt.exe
  "C:\Windows\SysWOW64\autofmt.exe"
  2⤵
  PID:2704
- C:\Windows\SysWOW64\autofmt.exe
  "C:\Windows\SysWOW64\autofmt.exe"
  2⤵
  PID:2308
- C:\Windows\SysWOW64\autofmt.exe
  "C:\Windows\SysWOW64\autofmt.exe"
  2⤵
  PID:352
- C:\Windows\SysWOW64\autofmt.exe
  "C:\Windows\SysWOW64\autofmt.exe"
  2⤵
  PID:1692
- C:\Windows\SysWOW64\autofmt.exe
  "C:\Windows\SysWOW64\autofmt.exe"
  2⤵
  PID:812
- C:\Windows\SysWOW64\autofmt.exe
  "C:\Windows\SysWOW64\autofmt.exe"
  2⤵
  PID:1648
- C:\Windows\SysWOW64\autofmt.exe
  "C:\Windows\SysWOW64\autofmt.exe"
  2⤵
  PID:2104
- C:\Windows\SysWOW64\autofmt.exe
  "C:\Windows\SysWOW64\autofmt.exe"
  2⤵
  PID:1516
- C:\Windows\SysWOW64\autofmt.exe
  "C:\Windows\SysWOW64\autofmt.exe"
  2⤵
  PID:1868
- C:\Windows\SysWOW64\autofmt.exe
  "C:\Windows\SysWOW64\autofmt.exe"
  2⤵
  PID:2948
- C:\Windows\SysWOW64\autofmt.exe
  "C:\Windows\SysWOW64\autofmt.exe"
  2⤵
  PID:2964
- C:\Windows\SysWOW64\wuapp.exe
  "C:\Windows\SysWOW64\wuapp.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2560

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\5_29\gdrqa.icm

Filesize
41KB

MD5
285afea69a2e1f8aae59a0c748aa2bd8

SHA1
8a087a497757b6beccf483687fb0d1edec45d3fa

SHA256
86aeb596d5962ca2389b1dcc252d0ae7b869b9e6ec319e76a387b0bb16baa910

SHA512
2ef2acb9b6377e85e2cf73db99555c91456ecd29dc842dc75f414ff2fbad6667c2c8d0af38a0ffd7a23c7c6a0bb28889671eeb42f61777a0dea85cbfe2cf4404

Download Submit
C:\Users\Admin\AppData\Roaming\5_29\xaguexgkmu.xvk

Filesize
370KB

MD5
56f43e5edcbdfcf4a7e9b8c09c0d2ba2

SHA1
1d47312b6eacbf63b04f83a9b4cd2dad238ae17a

SHA256
a26e71e81529a9cb7aa276618d014c5275cf3f7c356efb0e6b2308e30727a0fb

SHA512
8dd0f07a966aaf0c76fbdbed51184c2d765611128ce9b6e978229dc4954357c78cabef185e636e59827ffb7841913a0d543d60231e1f70aea2d62b0f917eba8a

Download Submit
\Users\Admin\AppData\Roaming\5_29\estrlf.pif

Filesize
794KB

MD5
18e404787e9c044105f5c4bec4600bd8

SHA1
9f1015bd7f33a6f3c1cc12c0971f51b1adee1939

SHA256
e15984dc8ea9627d370c40178676490129427e2dc23499f68c9c65c4386fea12

SHA512
c6a1faae524968351b4841665bfe1c5255f7e6c115b7a81a4b6c65626f23f7f15e4bb856914fce15225c33a2e2b6166b3f1f87698895fe0ce4cb084b630c2a5f

Download Submit
memory/332-73-0x0000000000400000-0x0000000000999000-memory.dmp

Filesize
5.6MB

Download
memory/332-70-0x0000000000400000-0x0000000000999000-memory.dmp

Filesize
5.6MB

Download
memory/484-64-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/484-66-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/484-69-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/484-68-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1196-82-0x0000000000010000-0x0000000000020000-memory.dmp

Filesize
64KB

Download
memory/1196-86-0x0000000006520000-0x0000000006604000-memory.dmp

Filesize
912KB

Download
memory/2196-77-0x00000000008B0000-0x00000000008B9000-memory.dmp

Filesize
36KB

Download
memory/2196-81-0x0000000000080000-0x00000000000AF000-memory.dmp

Filesize
188KB

Download
memory/2560-78-0x0000000001150000-0x000000000115B000-memory.dmp

Filesize
44KB

Download