formbook | 8a91c4bf99a674909e6993d52e061547517056d36f9b8e828a9148eb412ffa73

Analysis

max time kernel
146s
max time network
19s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
14/11/2024, 02:44

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General

Target
Invoice_Payment_Confirmation_INV#240085_pdf.exe
Size 1.1MB
Sample241114-c75tkaxjdr
SHA256 8a91c4bf99a674909e6993d52e061547517056d36f9b8e828a9148eb412ffa73
MD5 1b597c240cd23fda73024ed811e4a906
SHA1 f773bdd6e924b65284d8a9ef67f61615a9764a8e
SHA512 d1f00b959befd0c8f91587311d715508c45fb279e661f4ffacb5e3e5f0f19e4151f6baa35ff49fc5d7afe5bb0b09d96346da5d7b0324ee85edb4885ce07f07dc
SSDEEP 24576:Etb20pkaCqT5TBWgNQ7aXe1SQkPXr8mzcLk6A:tVg5tQ7aXe1bkPXAmzcY5
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

formbook f29s discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

Campaign

f29s

Decoy

rostnixon.net
exxxwordz.xyz
ndradesanches.shop
eneral-vceef.xyz
isanbowl.top
aresrasherregard.cfd
dzas-yeah.xyz
0083.miami
hongziyin01.top
jdhfmq.live
alembottling.net
vtyo-phone.xyz
kaqb-decade.xyz
odel-lsmfz.xyz
aradise.tech
uan123-rtp43.xyz
pusptracking.xyz
uqhi42.xyz
mihy-professor.xyz
mnz-your.xyz
iscussion-tjard.xyz
peak-ajau.xyz
ixedcontainerlogistics.today
ranxxletzz.xyz
ccloudserve.xyz
haloryner.website
ro-arenamega.pro
tjcb-wait.xyz
lywjv-issue.xyz
rta-away.xyz
ay888.website
asderkadinkollari.net
specially-smou.xyz
ound-qlhmm.xyz
nit-dreeu.xyz
ea-obgocc.xyz
rostavive-org.xyz
zpp-at.xyz
duxrib.xyz
uohz.net
etsgroove.app
awqs-wonder.xyz
acaxtecameralcarers.cfd
idstream.xyz
umayunileusesingests.shop
avada-cash-out.tech
byataltatweer.net
omething-nvho.xyz
yntomist.pics
aomei517.top
how-ydhtlu.xyz
ise-bjnh.xyz
ovt-jobs-lisitings00810.today
mmgiare.xyz
plqz-move.xyz
onheronummaryorkney.cfd
oqo-over.xyz
aee.pro
as-nhynby.xyz
dnaqm-walk.xyz
aranvickersvirilia.cfd
wqvn-environment.xyz
attern-equd.xyz
ivinetranquilityjourney.pics
kimosskrupulslacker.cfd

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/2324-22-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2324-25-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/3012-32-0x0000000000080000-0x00000000000AF000-memory.dmp	formbook

Drops startup file 1 IoCs

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

Executes dropped EXE 1 IoCs

pid	Process
2236	Dunlop.exe

Loads dropped DLL 1 IoCs

pid	Process
2592	Invoice_Payment_Confirmation_INV#240085_pdf.exe

AutoIT Executable 1 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral1/files/0x0031000000018bbf-8.dat	autoit_exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2236 set thread context of 2324	2236	Dunlop.exe	31
PID 2324 set thread context of 1412	2324	svchost.exe	21
PID 3012 set thread context of 1412	3012	NAPSTAT.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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Invoice_Payment_Confirmation_INV#240085_pdf.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Dunlop.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	NAPSTAT.EXE

Suspicious behavior: EnumeratesProcesses 30 IoCs

pid	Process
2324	svchost.exe
2324	svchost.exe
3012	NAPSTAT.EXE
3012	NAPSTAT.EXE
3012	NAPSTAT.EXE
3012	NAPSTAT.EXE
3012	NAPSTAT.EXE
3012	NAPSTAT.EXE
3012	NAPSTAT.EXE
3012	NAPSTAT.EXE
3012	NAPSTAT.EXE
3012	NAPSTAT.EXE
3012	NAPSTAT.EXE
3012	NAPSTAT.EXE
3012	NAPSTAT.EXE
3012	NAPSTAT.EXE
3012	NAPSTAT.EXE
3012	NAPSTAT.EXE
3012	NAPSTAT.EXE
3012	NAPSTAT.EXE
3012	NAPSTAT.EXE
3012	NAPSTAT.EXE
3012	NAPSTAT.EXE
3012	NAPSTAT.EXE
3012	NAPSTAT.EXE
3012	NAPSTAT.EXE
3012	NAPSTAT.EXE
3012	NAPSTAT.EXE
3012	NAPSTAT.EXE
3012	NAPSTAT.EXE

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
2236	Dunlop.exe
2324	svchost.exe
2324	svchost.exe
2324	svchost.exe
3012	NAPSTAT.EXE
3012	NAPSTAT.EXE

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2324	svchost.exe
Token: SeDebugPrivilege	3012	NAPSTAT.EXE

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 2592 wrote to memory of 2236	2592	Invoice_Payment_Confirmation_INV#240085_pdf.exe	30
PID 2592 wrote to memory of 2236	2592	Invoice_Payment_Confirmation_INV#240085_pdf.exe	30
PID 2592 wrote to memory of 2236	2592	Invoice_Payment_Confirmation_INV#240085_pdf.exe	30
PID 2592 wrote to memory of 2236	2592	Invoice_Payment_Confirmation_INV#240085_pdf.exe	30
PID 2236 wrote to memory of 2324	2236	Dunlop.exe	31
PID 2236 wrote to memory of 2324	2236	Dunlop.exe	31
PID 2236 wrote to memory of 2324	2236	Dunlop.exe	31
PID 2236 wrote to memory of 2324	2236	Dunlop.exe	31
PID 2236 wrote to memory of 2324	2236	Dunlop.exe	31
PID 1412 wrote to memory of 3012	1412	Explorer.EXE	32
PID 1412 wrote to memory of 3012	1412	Explorer.EXE	32
PID 1412 wrote to memory of 3012	1412	Explorer.EXE	32
PID 1412 wrote to memory of 3012	1412	Explorer.EXE	32
PID 3012 wrote to memory of 2920	3012	NAPSTAT.EXE	33
PID 3012 wrote to memory of 2920	3012	NAPSTAT.EXE	33
PID 3012 wrote to memory of 2920	3012	NAPSTAT.EXE	33
PID 3012 wrote to memory of 2920	3012	NAPSTAT.EXE	33

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1412
- C:\Users\Admin\AppData\Local\Temp\Invoice_Payment_Confirmation_INV#240085_pdf.exe
  "C:\Users\Admin\AppData\Local\Temp\Invoice_Payment_Confirmation_INV#240085_pdf.exe"
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2592
- - C:\Users\Admin\AppData\Local\Thebesian\Dunlop.exe
    "C:\Users\Admin\AppData\Local\Temp\Invoice_Payment_Confirmation_INV#240085_pdf.exe"
    3⤵
    - Drops startup file
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of WriteProcessMemory
    PID:2236
  - - C:\Windows\SysWOW64\svchost.exe
      "C:\Users\Admin\AppData\Local\Temp\Invoice_Payment_Confirmation_INV#240085_pdf.exe"
      4⤵
      Suspicious use of SetThreadContext
      Suspicious behavior: EnumeratesProcesses
      Suspicious behavior: MapViewOfSection
      Suspicious use of AdjustPrivilegeToken
      PID:2324
- 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:3012
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Windows\SysWOW64\svchost.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2920

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

nonagglutinant

Path C:\Users\Admin\AppData\Local\Temp\nonagglutinant
Size 185KB
SHA256 f5706eb4fd379758330eb6f7a0ae05d4d19ac529b7bb53e153acd635e5fb05a4
MD5 c07322e0ebc8ba37ea876cb6dfe5ca1f
SHA1 9e7c8b33c8ee6356e873e426ab661b0f0b968643
SHA512 88538a1164b2221f104cd35ef0dc1e9a521f4adb4f5f5b4b08c6214b3a146ab46ce177e5ab439d3ce505d967b600698cdcad85332ca525a8372e213d23665cb5
SSDEEP 3072:J/5BkSVeuKGYm3Zjt6IsSFJ+rwPfRmegliEOXaRjQs3KnMAGxLbCMUMhC:J/YS5KGYCSrwPZzglEucsKMAGF0p
MD5 SHA1 SHA512 SSDEEP

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Dunlop.exe

Path \Users\Admin\AppData\Local\Thebesian\Dunlop.exe
Size 1.1MB
SHA256 8a91c4bf99a674909e6993d52e061547517056d36f9b8e828a9148eb412ffa73
MD5 1b597c240cd23fda73024ed811e4a906
SHA1 f773bdd6e924b65284d8a9ef67f61615a9764a8e
SHA512 d1f00b959befd0c8f91587311d715508c45fb279e661f4ffacb5e3e5f0f19e4151f6baa35ff49fc5d7afe5bb0b09d96346da5d7b0324ee85edb4885ce07f07dc
SSDEEP 24576:Etb20pkaCqT5TBWgNQ7aXe1SQkPXr8mzcLk6A:tVg5tQ7aXe1bkPXAmzcY5
MD5 SHA1 SHA512 SSDEEP

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memory/1412-28-0x0000000006AB0000-0x0000000006BEE000-memory.dmp

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memory/1412-33-0x0000000006AB0000-0x0000000006BEE000-memory.dmp

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memory/2236-20-0x00000000006E0000-0x0000000000AE0000-memory.dmp

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memory/2324-25-0x0000000000400000-0x000000000042F000-memory.dmp

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memory/2324-26-0x0000000000250000-0x0000000000264000-memory.dmp

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memory/2324-23-0x0000000000780000-0x0000000000A83000-memory.dmp

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memory/2324-22-0x0000000000400000-0x000000000042F000-memory.dmp

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memory/2592-6-0x00000000007F0000-0x0000000000BF0000-memory.dmp

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memory/3012-29-0x0000000000E60000-0x0000000000EA6000-memory.dmp

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memory/3012-31-0x0000000000E60000-0x0000000000EA6000-memory.dmp

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memory/3012-32-0x0000000000080000-0x00000000000AF000-memory.dmp

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