formbook | 8b73f69b0b30a7e39b8b377cf2e11174f8a51a7d687f4661e9cd3af9f54d0991

General

Target

zSaBQa7CUnpGLHS.exe
Size

777KB
MD5

a5669db61177ca1feecf910d876cb2e1
SHA1

929046215d3fa65992db255dca3885ba9a6d7cc7
SHA256

8f7124624844c97145faad6f265f2a15b5f1fa67f107168b61fd777d987d9f35
SHA512

0ee38f1260ad234919ce1195ec495f2eb60e2b7063dffa83fa074b4eeaa386a405705ec9a7ac0c388a62cf0a8722e386b09d11e3b1bf936884888580c9cba469
SSDEEP

24576:DEhugrVbCx3YNCgUTMw3NvklTPG06EPpXRaI/u9q9dUwZm:NglCyCgUMwhkNPUEP7aZ9hk

Score

10^/10

formbook t18n discovery execution rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

t18n

Decoy

tmusicoregon.net

atici.online

j7u7.xyz

iewunucierwuerwnziqi1.info

ruvabetgiris.website

acik.lat

obsk.top

sphaltpaving-ttp1-shd-us-2.shop

ispensarynearme.news

b3nd.bond

urelook.xyz

gearlpfbm.top

aconstructionjob.bond

killsnexis.info

oshon.xyz

ashabsxw.top

ussiatraiding.buzz

raipsehumus.homes

6ae23rx.forum

edar88vvip.shop

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/2408-11-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2408-15-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2956-21-0x0000000000070000-0x000000000009F000-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
2400	powershell.exe

Deletes itself 1 IoCs

pid	Process
2724	cmd.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2152 set thread context of 2408	2152	zSaBQa7CUnpGLHS.exe	30
PID 2408 set thread context of 1244	2408	zSaBQa7CUnpGLHS.exe	21
PID 2956 set thread context of 1244	2956	cscript.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 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	zSaBQa7CUnpGLHS.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cscript.exe

Suspicious behavior: EnumeratesProcesses 30 IoCs

pid	Process
2408	zSaBQa7CUnpGLHS.exe
2408	zSaBQa7CUnpGLHS.exe
2400	powershell.exe
2956	cscript.exe
2956	cscript.exe
2956	cscript.exe
2956	cscript.exe
2956	cscript.exe
2956	cscript.exe
2956	cscript.exe
2956	cscript.exe
2956	cscript.exe
2956	cscript.exe
2956	cscript.exe
2956	cscript.exe
2956	cscript.exe
2956	cscript.exe
2956	cscript.exe
2956	cscript.exe
2956	cscript.exe
2956	cscript.exe
2956	cscript.exe
2956	cscript.exe
2956	cscript.exe
2956	cscript.exe
2956	cscript.exe
2956	cscript.exe
2956	cscript.exe
2956	cscript.exe
2956	cscript.exe

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
2408	zSaBQa7CUnpGLHS.exe
2408	zSaBQa7CUnpGLHS.exe
2408	zSaBQa7CUnpGLHS.exe
2956	cscript.exe
2956	cscript.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2408	zSaBQa7CUnpGLHS.exe
Token: SeDebugPrivilege	2400	powershell.exe
Token: SeDebugPrivilege	2956	cscript.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 2152 wrote to memory of 2400	2152	zSaBQa7CUnpGLHS.exe	28
PID 2152 wrote to memory of 2400	2152	zSaBQa7CUnpGLHS.exe	28
PID 2152 wrote to memory of 2400	2152	zSaBQa7CUnpGLHS.exe	28
PID 2152 wrote to memory of 2400	2152	zSaBQa7CUnpGLHS.exe	28
PID 2152 wrote to memory of 2408	2152	zSaBQa7CUnpGLHS.exe	30
PID 2152 wrote to memory of 2408	2152	zSaBQa7CUnpGLHS.exe	30
PID 2152 wrote to memory of 2408	2152	zSaBQa7CUnpGLHS.exe	30
PID 2152 wrote to memory of 2408	2152	zSaBQa7CUnpGLHS.exe	30
PID 2152 wrote to memory of 2408	2152	zSaBQa7CUnpGLHS.exe	30
PID 2152 wrote to memory of 2408	2152	zSaBQa7CUnpGLHS.exe	30
PID 2152 wrote to memory of 2408	2152	zSaBQa7CUnpGLHS.exe	30
PID 1244 wrote to memory of 2956	1244	Explorer.EXE	31
PID 1244 wrote to memory of 2956	1244	Explorer.EXE	31
PID 1244 wrote to memory of 2956	1244	Explorer.EXE	31
PID 1244 wrote to memory of 2956	1244	Explorer.EXE	31
PID 2956 wrote to memory of 2724	2956	cscript.exe	34
PID 2956 wrote to memory of 2724	2956	cscript.exe	34
PID 2956 wrote to memory of 2724	2956	cscript.exe	34
PID 2956 wrote to memory of 2724	2956	cscript.exe	34

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1244
- C:\Users\Admin\AppData\Local\Temp\zSaBQa7CUnpGLHS.exe
  "C:\Users\Admin\AppData\Local\Temp\zSaBQa7CUnpGLHS.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2152
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\zSaBQa7CUnpGLHS.exe"
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2400
- - C:\Users\Admin\AppData\Local\Temp\zSaBQa7CUnpGLHS.exe
    "C:\Users\Admin\AppData\Local\Temp\zSaBQa7CUnpGLHS.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:2408
- C:\Windows\SysWOW64\cscript.exe
  "C:\Windows\SysWOW64\cscript.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:2956
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\zSaBQa7CUnpGLHS.exe"
    3⤵
    - Deletes itself
    - System Location Discovery: System Language Discovery
    PID:2724

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

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/1244-22-0x00000000062E0000-0x000000000644E000-memory.dmp

Filesize
1.4MB

Download
memory/1244-17-0x00000000062E0000-0x000000000644E000-memory.dmp

Filesize
1.4MB

Download
memory/2152-12-0x0000000074790000-0x0000000074E7E000-memory.dmp

Filesize
6.9MB

Download
memory/2152-1-0x0000000000C40000-0x0000000000D08000-memory.dmp

Filesize
800KB

Download
memory/2152-2-0x0000000074790000-0x0000000074E7E000-memory.dmp

Filesize
6.9MB

Download
memory/2152-3-0x0000000000350000-0x0000000000362000-memory.dmp

Filesize
72KB

Download
memory/2152-4-0x000000007479E000-0x000000007479F000-memory.dmp

Filesize
4KB

Download
memory/2152-5-0x0000000074790000-0x0000000074E7E000-memory.dmp

Filesize
6.9MB

Download
memory/2152-6-0x0000000005070000-0x00000000050F8000-memory.dmp

Filesize
544KB

Download
memory/2152-0-0x000000007479E000-0x000000007479F000-memory.dmp

Filesize
4KB

Download
memory/2408-11-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2408-8-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2408-13-0x00000000008B0000-0x0000000000BB3000-memory.dmp

Filesize
3.0MB

Download
memory/2408-16-0x00000000001D0000-0x00000000001E4000-memory.dmp

Filesize
80KB

Download
memory/2408-15-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2408-9-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2408-7-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2956-20-0x00000000006A0000-0x00000000006C2000-memory.dmp

Filesize
136KB

Download
memory/2956-21-0x0000000000070000-0x000000000009F000-memory.dmp

Filesize
188KB

Download

Analysis

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