formbook | 44079f7afc8f2b9900564b14b8e3e9e5b8de7ad0b4a1d514e5ff644def494d4e

General

Target

STD 35 GA Plan_PDF.exe
Size

662KB
MD5

1697d5a8c04a7220e7bd25e3a7b4ada5
SHA1

5b71b005e84f5dcbca487c24f7662303d0dd656b
SHA256

44079f7afc8f2b9900564b14b8e3e9e5b8de7ad0b4a1d514e5ff644def494d4e
SHA512

3c68a2b785108b4ef26e122989b28f8126578815c8de0d8f80cdc251d3d86a31059b4aecd379fd6bde8aafcbc58bc2523e7dbaada706c3b3921d4ff2b192ae1f

Score

10^/10

formbook xloader iewb loader persistence rat spyware stealer suricata trojan

Malware Config

Extracted

Family

xloader

Version

2.9

Campaign

iewb

Decoy

n8FLlgIlb1rSEg5hJ9xMbw4hcmR38Q==

5vIAIY+pt81OtWs+FdIEdk7Y

LHIKc+oWGIQUUlfAAtEEdk7Y

ePM/cX2jvHrS

5hvPEw22+fdvmJz3C8FIVq0=

mb9EeX2jvHrS

Dx2zIYNvfjo8VUo5

6jVPnyJekv2RAc4gLKNwEqQ=

KWatHyjdE5Gj1Ng=

t9lk70gzUAZty4qjbVjF

6eUBeFPzKBWT125BFNIEdk7Y

dZUXOIyqTJGj1Ng=

iL3TVh2Jl5QVStnzxcAhIL8=

J1prtyklUfZGR/xDD71IbkWRd2yx

s9FgCOBRW9bU0Y6jbVjF

RYCbQDzcFBhcylgu

Fl0BV/8RJm6F9QRg8LXXTLo=

0dhumHzrCCZ3wdQg7nFF1AlL6Tk=

xvL+iL6wwX+/wH9K4lbZ/A==

N0lVceIFD5Gj1Ng=

Signatures

Formbook
Formbook is a data stealing malware which is capable of stealing data.
trojan spyware stealer formbook
Xloader
Xloader is a rebranded version of Formbook malware.
loader xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
suricata: ET MALWARE FormBook CnC Checkin (GET)
suricata

Xloader Payload 5 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/1076-63-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral1/memory/1076-64-0x000000000041F840-mapping.dmp	xloader
behavioral1/memory/1076-66-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral1/memory/2012-73-0x00000000000C0000-0x00000000000EC000-memory.dmp	xloader
behavioral1/memory/2012-77-0x00000000000C0000-0x00000000000EC000-memory.dmp	xloader

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

Processes:

STD 35 GA Plan_PDF.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Control Panel\International\Geo\Nation	STD 35 GA Plan_PDF.exe

Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

876 cmd.exe

pid	process
876	cmd.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

systray.exe

description	ioc	process
Key created	\Registry\Machine\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run	systray.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\KTXHYXZH547 = "C:\\Program Files (x86)\\Dnlr0h\\vgadfj8f.exe"	systray.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

STD 35 GA Plan_PDF.exeSTD 35 GA Plan_PDF.exesystray.exe

description	pid	process	target process
PID 756 set thread context of 1076	756	STD 35 GA Plan_PDF.exe	STD 35 GA Plan_PDF.exe
PID 1076 set thread context of 1224	1076	STD 35 GA Plan_PDF.exe	Explorer.EXE
PID 2012 set thread context of 1224	2012	systray.exe	Explorer.EXE

Drops file in Program Files directory 1 IoCs

Processes:

systray.exe

description ioc process

File opened for modification C:\Program Files (x86)\Dnlr0h\vgadfj8f.exe systray.exe

description	ioc	process
File opened for modification	C:\Program Files (x86)\Dnlr0h\vgadfj8f.exe	systray.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

systray.exe

description	ioc	process
Key created	\Registry\User\S-1-5-21-2277218442-1199762539-2004043321-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	systray.exe

Suspicious behavior: EnumeratesProcesses 10 IoCs

Processes:

STD 35 GA Plan_PDF.exesystray.exe

pid	process
1076	STD 35 GA Plan_PDF.exe
1076	STD 35 GA Plan_PDF.exe
2012	systray.exe
2012	systray.exe
2012	systray.exe
2012	systray.exe
2012	systray.exe
2012	systray.exe
2012	systray.exe
2012	systray.exe

Suspicious behavior: MapViewOfSection 7 IoCs

Processes:

STD 35 GA Plan_PDF.exesystray.exe

pid process

1076 STD 35 GA Plan_PDF.exe
1076 STD 35 GA Plan_PDF.exe
1076 STD 35 GA Plan_PDF.exe
2012 systray.exe
2012 systray.exe
2012 systray.exe
2012 systray.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

STD 35 GA Plan_PDF.exesystray.exe

description pid process

Token: SeDebugPrivilege 1076 STD 35 GA Plan_PDF.exe
Token: SeDebugPrivilege 2012 systray.exe
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

Explorer.EXE

pid process

1224 Explorer.EXE
1224 Explorer.EXE
Suspicious use of SendNotifyMessage 2 IoCs

Processes:

Explorer.EXE

pid process

1224 Explorer.EXE
1224 Explorer.EXE

description	pid	process
Token: SeDebugPrivilege	1076	STD 35 GA Plan_PDF.exe
Token: SeDebugPrivilege	2012	systray.exe

pid	process
1224	Explorer.EXE
1224	Explorer.EXE

pid	process
1224	Explorer.EXE
1224	Explorer.EXE

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

STD 35 GA Plan_PDF.exeExplorer.EXEsystray.exe

description	pid	process	target process
PID 756 wrote to memory of 1076	756	STD 35 GA Plan_PDF.exe	STD 35 GA Plan_PDF.exe
PID 756 wrote to memory of 1076	756	STD 35 GA Plan_PDF.exe	STD 35 GA Plan_PDF.exe
PID 756 wrote to memory of 1076	756	STD 35 GA Plan_PDF.exe	STD 35 GA Plan_PDF.exe
PID 756 wrote to memory of 1076	756	STD 35 GA Plan_PDF.exe	STD 35 GA Plan_PDF.exe
PID 756 wrote to memory of 1076	756	STD 35 GA Plan_PDF.exe	STD 35 GA Plan_PDF.exe
PID 756 wrote to memory of 1076	756	STD 35 GA Plan_PDF.exe	STD 35 GA Plan_PDF.exe
PID 756 wrote to memory of 1076	756	STD 35 GA Plan_PDF.exe	STD 35 GA Plan_PDF.exe
PID 1224 wrote to memory of 2012	1224	Explorer.EXE	systray.exe
PID 1224 wrote to memory of 2012	1224	Explorer.EXE	systray.exe
PID 1224 wrote to memory of 2012	1224	Explorer.EXE	systray.exe
PID 1224 wrote to memory of 2012	1224	Explorer.EXE	systray.exe
PID 2012 wrote to memory of 876	2012	systray.exe	cmd.exe
PID 2012 wrote to memory of 876	2012	systray.exe	cmd.exe
PID 2012 wrote to memory of 876	2012	systray.exe	cmd.exe
PID 2012 wrote to memory of 876	2012	systray.exe	cmd.exe
PID 2012 wrote to memory of 1468	2012	systray.exe	Firefox.exe
PID 2012 wrote to memory of 1468	2012	systray.exe	Firefox.exe
PID 2012 wrote to memory of 1468	2012	systray.exe	Firefox.exe
PID 2012 wrote to memory of 1468	2012	systray.exe	Firefox.exe
PID 2012 wrote to memory of 1468	2012	systray.exe	Firefox.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1224

C:\Users\Admin\AppData\Local\Temp\STD 35 GA Plan_PDF.exe
"C:\Users\Admin\AppData\Local\Temp\STD 35 GA Plan_PDF.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:756

C:\Users\Admin\AppData\Local\Temp\STD 35 GA Plan_PDF.exe
"C:\Users\Admin\AppData\Local\Temp\STD 35 GA Plan_PDF.exe"
3⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:1076

C:\Windows\SysWOW64\systray.exe
"C:\Windows\SysWOW64\systray.exe"
2⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Drops file in Program Files directory
- Modifies Internet Explorer settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2012

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\STD 35 GA Plan_PDF.exe"
3⤵
- Deletes itself
PID:876

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:1468

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/756-54-0x0000000000AA0000-0x0000000000B4C000-memory.dmp

Filesize
688KB

Download
memory/756-55-0x0000000075941000-0x0000000075943000-memory.dmp

Filesize
8KB

Download
memory/756-56-0x00000000004D0000-0x00000000004F0000-memory.dmp

Filesize
128KB

Download
memory/756-57-0x0000000000710000-0x000000000071E000-memory.dmp

Filesize
56KB

Download
memory/756-58-0x0000000005630000-0x00000000056AA000-memory.dmp

Filesize
488KB

Download
memory/756-59-0x0000000004790000-0x00000000047C2000-memory.dmp

Filesize
200KB

Download
memory/876-71-0x0000000000000000-mapping.dmp

Download
memory/1076-60-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1076-67-0x0000000000B50000-0x0000000000E53000-memory.dmp

Filesize
3.0MB

Download
memory/1076-64-0x000000000041F840-mapping.dmp

Download
memory/1076-66-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1076-61-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1076-68-0x0000000000170000-0x0000000000181000-memory.dmp

Filesize
68KB

Download
memory/1076-63-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1224-69-0x0000000004650000-0x0000000004748000-memory.dmp

Filesize
992KB

Download
memory/1224-76-0x0000000004830000-0x0000000004918000-memory.dmp

Filesize
928KB

Download
memory/1224-78-0x0000000004830000-0x0000000004918000-memory.dmp

Filesize
928KB

Download
memory/2012-70-0x0000000000000000-mapping.dmp

Download
memory/2012-72-0x0000000000300000-0x0000000000305000-memory.dmp

Filesize
20KB

Download
memory/2012-74-0x0000000001EC0000-0x00000000021C3000-memory.dmp

Filesize
3.0MB

Download
memory/2012-73-0x00000000000C0000-0x00000000000EC000-memory.dmp

Filesize
176KB

Download
memory/2012-75-0x0000000001D50000-0x0000000001DE0000-memory.dmp

Filesize
576KB

Download
memory/2012-77-0x00000000000C0000-0x00000000000EC000-memory.dmp

Filesize
176KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads