formbook | ec66f68731b1c186ac1c87c2520106f85e2a25951303014b9163f51c476846be

Analysis

max time kernel
148s
max time network
120s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
30/10/2024, 12:31

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General

Target
z83obqahfw.exe
Size 636KB
Sample241030-pp2emstdqr
SHA256 ec66f68731b1c186ac1c87c2520106f85e2a25951303014b9163f51c476846be
MD5 946ddca6df1a4ad1bab2b6166dbd516d
SHA1 7362693e6ac7990c7456a47c09a1e7463d855e26
SHA512 b8ebaa3b5aca238c4e7a4e2486b3d017d044fab1a3eb9e65c3e032751386909117b74a9e48bd5f7969c1fc39c5301d623617ca8d128a8e702163878dc738a43d
SSDEEP 12288:DzaDPw1Qk89Tmyx6Dz1Xy6ICOHdhWMTqJFl/UYp1pinxVy/56:DWLw9gTFg3MYsdhM1cYp1piw56
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

formbook dn13 discovery execution rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

Campaign

dn13

Decoy

5q53s.top
f9813.top
ysticsmoke.net
ignorysingeysquints.cfd
yncsignature.live
svp-their.xyz
outya.xyz
wlkflwef3sf2wf.top
etterjugfetkaril.cfd
p9eh2s99b5.top
400108iqlnnqi219.top
ynsu-condition.xyz
ndividual-bfiaen.xyz
anceibizamagazine.net
itrussips.live
orkcubefood.xyz
lindsandfurnishings.shop
ajwmid.top
pigramescentfeatous.shop
mbvcv56789.click
rmei2-cnpj.website
81uu.top
cis.services
ptionsxpress-17520.vip
ltimatraceglow.vip
apu4dmain.cfd
hckc-sell.xyz
nough-smae.xyz
fsoiw-hotel.xyz
mile-hkajwx.xyz
ay-hbcsg.xyz
articulart.net
ozezae7.pro
asy-jatcrz.xyz
wiftsscend.click
tinky.vip
ould-ktlgl.xyz
vagames.pro
sncmk.shop
trategy-eyewna.xyz
orty.pro
hanprojects.tech
ronsoy.vip
aoxiangwu.top
8tsl.fashion
ashersmeaningmellitz.cfd
ood-packing-iasehq19x224.today
oldier-zjfuu.xyz
ysterywarrior932.top
omercialec.shop
ashclub.xyz
trongenergetichealth.top
addedcaitiffcanzos.shop
ack-gtiij.xyz
nformation-gdrs.xyz
ouwmsoe.top
apermatepens.net
5i34whsisp.top
appen-zuxs.xyz
trennebaffinbayamon.cfd
nablerententeewart.shop
xpert-private-tutors.today
zzw-tv.xyz
ffvd-traditional.xyz
31231851.xyz

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/2700-19-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2700-22-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2572-24-0x00000000000D0000-0x00000000000FF000-memory.dmp	formbook

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
2296	powershell.exe

Deletes itself 1 IoCs

pid	Process
2644	cmd.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 2480 set thread context of 2700	2480	z83obqahfw.exe	35
PID 2700 set thread context of 1196	2700	z83obqahfw.exe	21
PID 2700 set thread context of 1196	2700	z83obqahfw.exe	21
PID 2572 set thread context of 1196	2572	svchost.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	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	z83obqahfw.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
2120	schtasks.exe

Suspicious behavior: EnumeratesProcesses 34 IoCs

pid	Process
2480	z83obqahfw.exe
2480	z83obqahfw.exe
2480	z83obqahfw.exe
2480	z83obqahfw.exe
2480	z83obqahfw.exe
2700	z83obqahfw.exe
2700	z83obqahfw.exe
2296	powershell.exe
2700	z83obqahfw.exe
2572	svchost.exe
2572	svchost.exe
2572	svchost.exe
2572	svchost.exe
2572	svchost.exe
2572	svchost.exe
2572	svchost.exe
2572	svchost.exe
2572	svchost.exe
2572	svchost.exe
2572	svchost.exe
2572	svchost.exe
2572	svchost.exe
2572	svchost.exe
2572	svchost.exe
2572	svchost.exe
2572	svchost.exe
2572	svchost.exe
2572	svchost.exe
2572	svchost.exe
2572	svchost.exe
2572	svchost.exe
2572	svchost.exe
2572	svchost.exe
2572	svchost.exe

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
2700	z83obqahfw.exe
2700	z83obqahfw.exe
2700	z83obqahfw.exe
2700	z83obqahfw.exe
2572	svchost.exe
2572	svchost.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	2480	z83obqahfw.exe
Token: SeDebugPrivilege	2700	z83obqahfw.exe
Token: SeDebugPrivilege	2296	powershell.exe
Token: SeDebugPrivilege	2572	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2480 wrote to memory of 2296	2480	z83obqahfw.exe	31
PID 2480 wrote to memory of 2296	2480	z83obqahfw.exe	31
PID 2480 wrote to memory of 2296	2480	z83obqahfw.exe	31
PID 2480 wrote to memory of 2296	2480	z83obqahfw.exe	31
PID 2480 wrote to memory of 2120	2480	z83obqahfw.exe	33
PID 2480 wrote to memory of 2120	2480	z83obqahfw.exe	33
PID 2480 wrote to memory of 2120	2480	z83obqahfw.exe	33
PID 2480 wrote to memory of 2120	2480	z83obqahfw.exe	33
PID 2480 wrote to memory of 2700	2480	z83obqahfw.exe	35
PID 2480 wrote to memory of 2700	2480	z83obqahfw.exe	35
PID 2480 wrote to memory of 2700	2480	z83obqahfw.exe	35
PID 2480 wrote to memory of 2700	2480	z83obqahfw.exe	35
PID 2480 wrote to memory of 2700	2480	z83obqahfw.exe	35
PID 2480 wrote to memory of 2700	2480	z83obqahfw.exe	35
PID 2480 wrote to memory of 2700	2480	z83obqahfw.exe	35
PID 1196 wrote to memory of 2572	1196	Explorer.EXE	36
PID 1196 wrote to memory of 2572	1196	Explorer.EXE	36
PID 1196 wrote to memory of 2572	1196	Explorer.EXE	36
PID 1196 wrote to memory of 2572	1196	Explorer.EXE	36
PID 2572 wrote to memory of 2644	2572	svchost.exe	37
PID 2572 wrote to memory of 2644	2572	svchost.exe	37
PID 2572 wrote to memory of 2644	2572	svchost.exe	37
PID 2572 wrote to memory of 2644	2572	svchost.exe	37

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1196
- C:\Users\Admin\AppData\Local\Temp\z83obqahfw.exe
  "C:\Users\Admin\AppData\Local\Temp\z83obqahfw.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2480
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\ZXTRzzwt.exe"
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2296
- - C:\Windows\SysWOW64\schtasks.exe
    "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\ZXTRzzwt" /XML "C:\Users\Admin\AppData\Local\Temp\tmp2858.tmp"
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2120
- - C:\Users\Admin\AppData\Local\Temp\z83obqahfw.exe
    "C:\Users\Admin\AppData\Local\Temp\z83obqahfw.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:2700
- C:\Windows\SysWOW64\svchost.exe
  "C:\Windows\SysWOW64\svchost.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:2572
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\z83obqahfw.exe"
    3⤵
    - Deletes itself
    - System Location Discovery: System Language Discovery
    PID:2644

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

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

tmp2858.tmp

Path C:\Users\Admin\AppData\Local\Temp\tmp2858.tmp
Size 1KB
SHA256 0f78cdc975ea29701695469e603295b6fcd1010904afc438240f3190a9d7e3ab
MD5 67d4e93b746621b8d64a5e14bd750006
SHA1 10f083e8e28a2b5160128d7ce7428b595265f87b
SHA512 1d300549f8227e9be75f9dde60cb1bef0aa52486d670c08e6d69ad11d7d83f2c80c80ce02bd36e984ed8e44dcd545dccdef7b9725d0c4b82ca5c548ec28e3286
MD5 SHA1 SHA512

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memory/2480-20-0x00000000740F0000-0x00000000747DE000-memory.dmp

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memory/2480-0-0x00000000740FE000-0x00000000740FF000-memory.dmp

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memory/2480-3-0x00000000008F0000-0x000000000090E000-memory.dmp

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memory/2480-4-0x00000000740FE000-0x00000000740FF000-memory.dmp

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memory/2480-5-0x00000000740F0000-0x00000000747DE000-memory.dmp

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memory/2480-6-0x00000000009A0000-0x0000000000A16000-memory.dmp

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memory/2480-2-0x00000000740F0000-0x00000000747DE000-memory.dmp

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memory/2480-1-0x00000000011B0000-0x0000000001256000-memory.dmp

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memory/2572-24-0x00000000000D0000-0x00000000000FF000-memory.dmp

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memory/2572-23-0x0000000000C40000-0x0000000000C48000-memory.dmp

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memory/2700-14-0x0000000000400000-0x000000000042F000-memory.dmp

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memory/2700-16-0x0000000000400000-0x000000000042F000-memory.dmp

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memory/2700-22-0x0000000000400000-0x000000000042F000-memory.dmp

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memory/2700-18-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

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memory/2700-19-0x0000000000400000-0x000000000042F000-memory.dmp

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