formbook | 4562af450cbc44c9ddf59509c802f83abcc2dc66a2eccc0b734ea7ceded60522

General

Target

tmp.exe
Size

1.1MB
MD5

911b41caf07e1358460415fe7ddc9ba5
SHA1

2a2e2120055b91824166b4cbecb86b25cab7a6f1
SHA256

4562af450cbc44c9ddf59509c802f83abcc2dc66a2eccc0b734ea7ceded60522
SHA512

92f5410901ce62f81bd2d1e0e86cd3492b05fcf415a271e9784994239296b3001e1a53b5ff176d1c3cc09fa42ae1e0c379cada397c74d7e232590e048938b80d
SSDEEP

12288:imIFTT41hw4e/ehLrz9+maNmNR734hodpBXk8jB6rSDdrCsv6ySk1hw4e/:lIF/L4LJwNmNYqpBXXQCOsvu4

Score

10^/10

formbook nytc rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Campaign

nytc

Decoy

xxa3lYw6m81Pd//kzzAdG4U=

YXZAfGEJkwXABM5TR/E=

hUbaOQOt0DYguI9XS8pwJrEZWmU=

A/ygqm4Kfa0kUcnqnsJDp+zEWGM=

RORz56hFPHnrLO2iW0+9

iqg4UizXgbNRcvmiW0+9

VRTafWQvdNtipVkn5VtZyrF/+rnbCQ==

gQueRkb7G4Z/Jvu3qBQZNo8=

ePKbHxG8f76FOQesODERPA==

fHESMDnjE3MqK+7b

0k/peV8LzCGeqzU7ODERPA==

cTQPl24ePactS+KiW0+9

pjTaSRTKnctzqirmZx/oa3X0tg==

aAWYMRriqLzAA85TR/E=

tDgT5cRmmQqRpFrkpR+4

drFaFOGXywjGUxzL9wm++AOs

Okbd//qcDXIbai4QB7WKaH+p6bEPPfgV

ae/IhkTwKWcXT9mY6A+++AOs

eEbmHeuHEHk4xoclVxQZNo8=

C2I8W0/9c+jsDk/CmEn8Ng==

Signatures

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

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Control Panel\International\Geo\Nation	tmp.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 1676 set thread context of 2004	1676	tmp.exe	28
PID 2004 set thread context of 1212	2004	tmp.exe	14
PID 1984 set thread context of 1212	1984	NETSTAT.EXE	14

Gathers network information 2 TTPs 1 IoCs

Uses commandline utility to view network configuration.

System Information Discovery

T1082

Command-Line Interface

T1059

pid	Process
1984	NETSTAT.EXE

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\Registry\User\S-1-5-21-3845472200-3839195424-595303356-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	NETSTAT.EXE

Suspicious behavior: EnumeratesProcesses 17 IoCs

pid	Process
2004	tmp.exe
2004	tmp.exe
2004	tmp.exe
2004	tmp.exe
1984	NETSTAT.EXE
1984	NETSTAT.EXE
1984	NETSTAT.EXE
1984	NETSTAT.EXE
1984	NETSTAT.EXE
1984	NETSTAT.EXE
1984	NETSTAT.EXE
1984	NETSTAT.EXE
1984	NETSTAT.EXE
1984	NETSTAT.EXE
1984	NETSTAT.EXE
1984	NETSTAT.EXE
1984	NETSTAT.EXE

Suspicious behavior: MapViewOfSection 7 IoCs

pid	Process
2004	tmp.exe
2004	tmp.exe
2004	tmp.exe
1984	NETSTAT.EXE
1984	NETSTAT.EXE
1984	NETSTAT.EXE
1984	NETSTAT.EXE

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2004	tmp.exe
Token: SeDebugPrivilege	1984	NETSTAT.EXE

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
1212	Explorer.EXE
1212	Explorer.EXE

Suspicious use of SendNotifyMessage 2 IoCs

pid	Process
1212	Explorer.EXE
1212	Explorer.EXE

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 1676 wrote to memory of 2004	1676	tmp.exe	28
PID 1676 wrote to memory of 2004	1676	tmp.exe	28
PID 1676 wrote to memory of 2004	1676	tmp.exe	28
PID 1676 wrote to memory of 2004	1676	tmp.exe	28
PID 1676 wrote to memory of 2004	1676	tmp.exe	28
PID 1676 wrote to memory of 2004	1676	tmp.exe	28
PID 1676 wrote to memory of 2004	1676	tmp.exe	28
PID 1212 wrote to memory of 1984	1212	Explorer.EXE	29
PID 1212 wrote to memory of 1984	1212	Explorer.EXE	29
PID 1212 wrote to memory of 1984	1212	Explorer.EXE	29
PID 1212 wrote to memory of 1984	1212	Explorer.EXE	29
PID 1984 wrote to memory of 1152	1984	NETSTAT.EXE	31
PID 1984 wrote to memory of 1152	1984	NETSTAT.EXE	31
PID 1984 wrote to memory of 1152	1984	NETSTAT.EXE	31
PID 1984 wrote to memory of 1152	1984	NETSTAT.EXE	31
PID 1984 wrote to memory of 1152	1984	NETSTAT.EXE	31

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1212
- C:\Users\Admin\AppData\Local\Temp\tmp.exe
  "C:\Users\Admin\AppData\Local\Temp\tmp.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of WriteProcessMemory
  PID:1676
- - C:\Users\Admin\AppData\Local\Temp\tmp.exe
    "C:\Users\Admin\AppData\Local\Temp\tmp.exe"
    3⤵
    - Checks computer location settings
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:2004
- C:\Windows\SysWOW64\NETSTAT.EXE
  "C:\Windows\SysWOW64\NETSTAT.EXE"
  2⤵
  - Suspicious use of SetThreadContext
  - Gathers network information
  - Modifies Internet Explorer settings
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1984
- - C:\Program Files\Mozilla Firefox\Firefox.exe
    "C:\Program Files\Mozilla Firefox\Firefox.exe"
    3⤵
    PID:1152

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Command-Line Interface

1

T1059

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/1212-68-0x0000000002A80000-0x0000000002B81000-memory.dmp

Filesize
1.0MB

Download
memory/1212-78-0x0000000006460000-0x0000000006536000-memory.dmp

Filesize
856KB

Download
memory/1212-76-0x0000000006460000-0x0000000006536000-memory.dmp

Filesize
856KB

Download
memory/1676-55-0x0000000075E31000-0x0000000075E33000-memory.dmp

Filesize
8KB

Download
memory/1676-56-0x00000000002E0000-0x00000000002FA000-memory.dmp

Filesize
104KB

Download
memory/1676-57-0x0000000000780000-0x000000000078C000-memory.dmp

Filesize
48KB

Download
memory/1676-58-0x0000000007F50000-0x0000000007FDC000-memory.dmp

Filesize
560KB

Download
memory/1676-59-0x0000000004F80000-0x0000000004FB2000-memory.dmp

Filesize
200KB

Download
memory/1676-54-0x0000000000D30000-0x0000000000E4A000-memory.dmp

Filesize
1.1MB

Download
memory/1984-71-0x0000000000C20000-0x0000000000C29000-memory.dmp

Filesize
36KB

Download
memory/1984-72-0x00000000000C0000-0x00000000000EB000-memory.dmp

Filesize
172KB

Download
memory/1984-73-0x00000000021C0000-0x00000000024C3000-memory.dmp

Filesize
3.0MB

Download
memory/1984-75-0x0000000000B10000-0x0000000000B9F000-memory.dmp

Filesize
572KB

Download
memory/1984-77-0x00000000000C0000-0x00000000000EB000-memory.dmp

Filesize
172KB

Download
memory/2004-66-0x00000000008E0000-0x0000000000BE3000-memory.dmp

Filesize
3.0MB

Download
memory/2004-67-0x00000000000A0000-0x00000000000B0000-memory.dmp

Filesize
64KB

Download
memory/2004-63-0x0000000000400000-0x000000000042B000-memory.dmp

Filesize
172KB

Download
memory/2004-70-0x0000000000400000-0x000000000042B000-memory.dmp

Filesize
172KB

Download
memory/2004-61-0x0000000000400000-0x000000000042B000-memory.dmp

Filesize
172KB

Download
memory/2004-60-0x0000000000400000-0x000000000042B000-memory.dmp

Filesize
172KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads