formbook | 4da4d8e83255158a09663b9da8faaecae3a0a9175571aee37567f224cb34e694

General

Target

CpuyfZYLGoDh27Y.exe
Size

687KB
MD5

a2ec87198a2b44d6de329181c2550e59
SHA1

fcde8f6052947da44d798d29011411b53fe6f62f
SHA256

4da4d8e83255158a09663b9da8faaecae3a0a9175571aee37567f224cb34e694
SHA512

f0c04730ce2b5097dfe904be5a66a61d7f8167fe54f16f197df1ac44fddfe4d19ff822f670da1683bb1b387140395c08a09ab711e4ccb829fde704cce4affaf3
SSDEEP

12288:NbCbCwgqaVoumEOvJNYqOQnp/P/dtf0xSEy/q2FgFtWX5+lECs4mjl7gCMpd6N0t:NGC/qaSumdvJLxj0TI7Ct9JWl7gCMpMU

Score

10^/10

formbook d16h discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

d16h

Decoy

iki-graphy.online

l8z8c.vip

1709.asia

inematography-course-72246.bond

pis3noe2e.sbs

wernv.xyz

ovepepe.xyz

ama-online.world

ookmouse.fun

harkclothingdesigns.xyz

bbvvjuiqew.bond

sed-cars-93620.bond

esgateeganhe.shop

cekmeledak.info

ebulahorizon.buzz

peakers-92991.bond

essislotgoal16.top

hafi.biz

ichunyang.club

lrica.net

Signatures

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

Formbook payload 2 IoCs

rat

resource	yara_rule
behavioral1/memory/2904-12-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2904-16-0x0000000000400000-0x000000000042F000-memory.dmp	formbook

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2432 set thread context of 2904	2432	CpuyfZYLGoDh27Y.exe	30
PID 2904 set thread context of 1224	2904	CpuyfZYLGoDh27Y.exe	21

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2292	2952	WerFault.exe	31

System Location Discovery: System Language Discovery 1 TTPs 2 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	CpuyfZYLGoDh27Y.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	msiexec.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2904	CpuyfZYLGoDh27Y.exe
2904	CpuyfZYLGoDh27Y.exe

Suspicious behavior: MapViewOfSection 3 IoCs

pid	Process
2904	CpuyfZYLGoDh27Y.exe
2904	CpuyfZYLGoDh27Y.exe
2904	CpuyfZYLGoDh27Y.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2904	CpuyfZYLGoDh27Y.exe
Token: SeShutdownPrivilege	1224	Explorer.EXE

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 2432 wrote to memory of 2904	2432	CpuyfZYLGoDh27Y.exe	30
PID 2432 wrote to memory of 2904	2432	CpuyfZYLGoDh27Y.exe	30
PID 2432 wrote to memory of 2904	2432	CpuyfZYLGoDh27Y.exe	30
PID 2432 wrote to memory of 2904	2432	CpuyfZYLGoDh27Y.exe	30
PID 2432 wrote to memory of 2904	2432	CpuyfZYLGoDh27Y.exe	30
PID 2432 wrote to memory of 2904	2432	CpuyfZYLGoDh27Y.exe	30
PID 2432 wrote to memory of 2904	2432	CpuyfZYLGoDh27Y.exe	30
PID 1224 wrote to memory of 2952	1224	Explorer.EXE	31
PID 1224 wrote to memory of 2952	1224	Explorer.EXE	31
PID 1224 wrote to memory of 2952	1224	Explorer.EXE	31
PID 1224 wrote to memory of 2952	1224	Explorer.EXE	31
PID 1224 wrote to memory of 2952	1224	Explorer.EXE	31
PID 1224 wrote to memory of 2952	1224	Explorer.EXE	31
PID 1224 wrote to memory of 2952	1224	Explorer.EXE	31
PID 2952 wrote to memory of 2292	2952	msiexec.exe	32
PID 2952 wrote to memory of 2292	2952	msiexec.exe	32
PID 2952 wrote to memory of 2292	2952	msiexec.exe	32
PID 2952 wrote to memory of 2292	2952	msiexec.exe	32

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1224
- C:\Users\Admin\AppData\Local\Temp\CpuyfZYLGoDh27Y.exe
  "C:\Users\Admin\AppData\Local\Temp\CpuyfZYLGoDh27Y.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2432
- - C:\Users\Admin\AppData\Local\Temp\CpuyfZYLGoDh27Y.exe
    "C:\Users\Admin\AppData\Local\Temp\CpuyfZYLGoDh27Y.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:2904
- C:\Windows\SysWOW64\msiexec.exe
  "C:\Windows\SysWOW64\msiexec.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2952
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2952 -s 272
    3⤵
    - Program crash
    PID:2292

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

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/1224-24-0x0000000004C60000-0x0000000004D52000-memory.dmp

Filesize
968KB

Download
memory/1224-18-0x0000000004C60000-0x0000000004D52000-memory.dmp

Filesize
968KB

Download
memory/2432-13-0x0000000073ED0000-0x00000000745BE000-memory.dmp

Filesize
6.9MB

Download
memory/2432-1-0x0000000001180000-0x0000000001232000-memory.dmp

Filesize
712KB

Download
memory/2432-2-0x0000000073ED0000-0x00000000745BE000-memory.dmp

Filesize
6.9MB

Download
memory/2432-3-0x00000000002B0000-0x00000000002C2000-memory.dmp

Filesize
72KB

Download
memory/2432-4-0x0000000073EDE000-0x0000000073EDF000-memory.dmp

Filesize
4KB

Download
memory/2432-5-0x0000000073ED0000-0x00000000745BE000-memory.dmp

Filesize
6.9MB

Download
memory/2432-6-0x00000000003C0000-0x00000000003D0000-memory.dmp

Filesize
64KB

Download
memory/2432-7-0x0000000001070000-0x00000000010E6000-memory.dmp

Filesize
472KB

Download
memory/2432-0-0x0000000073EDE000-0x0000000073EDF000-memory.dmp

Filesize
4KB

Download
memory/2904-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2904-9-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2904-14-0x00000000009E0000-0x0000000000CE3000-memory.dmp

Filesize
3.0MB

Download
memory/2904-16-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2904-17-0x0000000000130000-0x0000000000144000-memory.dmp

Filesize
80KB

Download
memory/2904-12-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2904-8-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2952-20-0x0000000000A60000-0x0000000000A74000-memory.dmp

Filesize
80KB

Download
memory/2952-19-0x0000000000A60000-0x0000000000A74000-memory.dmp

Filesize
80KB

Download
memory/2952-22-0x0000000000A60000-0x0000000000A74000-memory.dmp

Filesize
80KB

Download

Analysis

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