formbook | 5775d4b06096a813ae445ace79308cd93882ea2e303362ecd53297ba8c4a38c4

General

Target

Paymentreceipt.exe
Size

1.1MB
MD5

e2e083fa9b190d0249845229f584a72d
SHA1

2f554be4a28d9f21f3da126ef351fb3f3a3b35ed
SHA256

5775d4b06096a813ae445ace79308cd93882ea2e303362ecd53297ba8c4a38c4
SHA512

70371955a794665389d1fe4f294f3aa72cafdf01e306c63664dd1fb957cb7b38bee1231abd1de1a12736ae229581eee7a050485423f84454be607c3ad4b5a875
SSDEEP

24576:uRmJkcoQricOIQxiZY1iaCBJd43eZY/F8wFgOxottM:7JZoQrbTFZY1iaCBLZ2TFgEo7M

Score

10^/10

formbook c24t discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

c24t

Decoy

ealthbridgeccs.online

ngelicais.art

uktuksu1.sbs

fapoker.asia

hecreature.tech

orenzoplaybest14.xyz

op-smartphones-deal.today

delark.click

7395.asia

otnews.cfd

j16e.xyz

oko.events

fscxb.top

roudtxliberals.vote

asas-br.bond

ourhealthyourlife.shop

fbpd.top

j9u9.xyz

uijiuw.top

aming-chair-37588.bond

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/2348-3-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2348-6-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2116-11-0x00000000000C0000-0x00000000000EF000-memory.dmp	formbook

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 3036 set thread context of 2348	3036	Paymentreceipt.exe	30
PID 2348 set thread context of 1208	2348	svchost.exe	21
PID 2116 set thread context of 1208	2116	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 3 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	NETSTAT.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Paymentreceipt.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
2116	NETSTAT.EXE

Suspicious behavior: EnumeratesProcesses 31 IoCs

pid	Process
2348	svchost.exe
2348	svchost.exe
2116	NETSTAT.EXE
2116	NETSTAT.EXE
2116	NETSTAT.EXE
2116	NETSTAT.EXE
2116	NETSTAT.EXE
2116	NETSTAT.EXE
2116	NETSTAT.EXE
2116	NETSTAT.EXE
2116	NETSTAT.EXE
2116	NETSTAT.EXE
2116	NETSTAT.EXE
2116	NETSTAT.EXE
2116	NETSTAT.EXE
2116	NETSTAT.EXE
2116	NETSTAT.EXE
2116	NETSTAT.EXE
2116	NETSTAT.EXE
2116	NETSTAT.EXE
2116	NETSTAT.EXE
2116	NETSTAT.EXE
2116	NETSTAT.EXE
2116	NETSTAT.EXE
2116	NETSTAT.EXE
2116	NETSTAT.EXE
2116	NETSTAT.EXE
2116	NETSTAT.EXE
2116	NETSTAT.EXE
2116	NETSTAT.EXE
2116	NETSTAT.EXE

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
3036	Paymentreceipt.exe
2348	svchost.exe
2348	svchost.exe
2348	svchost.exe
2116	NETSTAT.EXE
2116	NETSTAT.EXE

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2348	svchost.exe
Token: SeDebugPrivilege	2116	NETSTAT.EXE

Suspicious use of FindShellTrayWindow 4 IoCs

pid	Process
3036	Paymentreceipt.exe
3036	Paymentreceipt.exe
1208	Explorer.EXE
1208	Explorer.EXE

Suspicious use of SendNotifyMessage 2 IoCs

pid	Process
3036	Paymentreceipt.exe
3036	Paymentreceipt.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 3036 wrote to memory of 2348	3036	Paymentreceipt.exe	30
PID 3036 wrote to memory of 2348	3036	Paymentreceipt.exe	30
PID 3036 wrote to memory of 2348	3036	Paymentreceipt.exe	30
PID 3036 wrote to memory of 2348	3036	Paymentreceipt.exe	30
PID 3036 wrote to memory of 2348	3036	Paymentreceipt.exe	30
PID 1208 wrote to memory of 2116	1208	Explorer.EXE	31
PID 1208 wrote to memory of 2116	1208	Explorer.EXE	31
PID 1208 wrote to memory of 2116	1208	Explorer.EXE	31
PID 1208 wrote to memory of 2116	1208	Explorer.EXE	31
PID 2116 wrote to memory of 2984	2116	NETSTAT.EXE	32
PID 2116 wrote to memory of 2984	2116	NETSTAT.EXE	32
PID 2116 wrote to memory of 2984	2116	NETSTAT.EXE	32
PID 2116 wrote to memory of 2984	2116	NETSTAT.EXE	32

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:1208
- C:\Users\Admin\AppData\Local\Temp\Paymentreceipt.exe
  "C:\Users\Admin\AppData\Local\Temp\Paymentreceipt.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of WriteProcessMemory
  PID:3036
- - C:\Windows\SysWOW64\svchost.exe
    "C:\Users\Admin\AppData\Local\Temp\Paymentreceipt.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:2348
- 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:2116
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Windows\SysWOW64\svchost.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2984

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

2

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/1208-8-0x0000000006D40000-0x0000000006EE1000-memory.dmp

Filesize
1.6MB

Download
memory/1208-21-0x0000000007650000-0x0000000007783000-memory.dmp

Filesize
1.2MB

Download
memory/1208-19-0x0000000007650000-0x0000000007783000-memory.dmp

Filesize
1.2MB

Download
memory/1208-18-0x0000000007650000-0x0000000007783000-memory.dmp

Filesize
1.2MB

Download
memory/1208-12-0x0000000006D40000-0x0000000006EE1000-memory.dmp

Filesize
1.6MB

Download
memory/2116-9-0x0000000000AB0000-0x0000000000AB9000-memory.dmp

Filesize
36KB

Download
memory/2116-10-0x0000000000AB0000-0x0000000000AB9000-memory.dmp

Filesize
36KB

Download
memory/2116-11-0x00000000000C0000-0x00000000000EF000-memory.dmp

Filesize
188KB

Download
memory/2348-6-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2348-7-0x0000000000390000-0x00000000003A4000-memory.dmp

Filesize
80KB

Download
memory/2348-4-0x00000000009F0000-0x0000000000CF3000-memory.dmp

Filesize
3.0MB

Download
memory/2348-3-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/3036-2-0x0000000003730000-0x0000000003930000-memory.dmp

Filesize
2.0MB

Download

Analysis

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