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
suricata: ET MALWARE FormBook CnC Checkin (POST) M2
suricata: ET MALWARE FormBook CnC Checkin (POST) M2
suricata

Xloader Payload 4 IoCs

rat

Processes:

resource	yara_rule
behavioral2/memory/3992-137-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral2/memory/3992-143-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral2/memory/4204-146-0x0000000000450000-0x000000000047C000-memory.dmp	xloader
behavioral2/memory/4204-150-0x0000000000450000-0x000000000047C000-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-1-5-21-1809750270-3141839489-3074374771-1000\Control Panel\International\Geo\Nation	STD 35 GA Plan_PDF.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

NETSTAT.EXE

description	ioc	process
Key created	\Registry\Machine\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run	NETSTAT.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\BTEHBPXPSV = "C:\\Program Files (x86)\\Otxtprl9\\rlllvm4ijz.exe"	NETSTAT.EXE

Suspicious use of SetThreadContext 3 IoCs

Processes:

STD 35 GA Plan_PDF.exeSTD 35 GA Plan_PDF.exeNETSTAT.EXE

description	pid	process	target process
PID 2340 set thread context of 3992	2340	STD 35 GA Plan_PDF.exe	STD 35 GA Plan_PDF.exe
PID 3992 set thread context of 8	3992	STD 35 GA Plan_PDF.exe	Explorer.EXE
PID 4204 set thread context of 8	4204	NETSTAT.EXE	Explorer.EXE

Drops file in Program Files directory 1 IoCs

Processes:

NETSTAT.EXE

description ioc process

File opened for modification C:\Program Files (x86)\Otxtprl9\rlllvm4ijz.exe NETSTAT.EXE
Gathers network information 2 TTPs 1 IoCs
Uses commandline utility to view network configuration.

System Information Discovery
T1082

Command-Line Interface
T1059

Processes:

NETSTAT.EXE

pid process

4204 NETSTAT.EXE

description	ioc	process
File opened for modification	C:\Program Files (x86)\Otxtprl9\rlllvm4ijz.exe	NETSTAT.EXE

pid	process
4204	NETSTAT.EXE

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

NETSTAT.EXE

description	ioc	process
Key created	\Registry\User\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	NETSTAT.EXE

Suspicious behavior: EnumeratesProcesses 34 IoCs

Processes:

STD 35 GA Plan_PDF.exeNETSTAT.EXE

pid	process
3992	STD 35 GA Plan_PDF.exe
3992	STD 35 GA Plan_PDF.exe
3992	STD 35 GA Plan_PDF.exe
3992	STD 35 GA Plan_PDF.exe
4204	NETSTAT.EXE
4204	NETSTAT.EXE
4204	NETSTAT.EXE
4204	NETSTAT.EXE
4204	NETSTAT.EXE
4204	NETSTAT.EXE
4204	NETSTAT.EXE
4204	NETSTAT.EXE
4204	NETSTAT.EXE
4204	NETSTAT.EXE
4204	NETSTAT.EXE
4204	NETSTAT.EXE
4204	NETSTAT.EXE
4204	NETSTAT.EXE
4204	NETSTAT.EXE
4204	NETSTAT.EXE
4204	NETSTAT.EXE
4204	NETSTAT.EXE
4204	NETSTAT.EXE
4204	NETSTAT.EXE
4204	NETSTAT.EXE
4204	NETSTAT.EXE
4204	NETSTAT.EXE
4204	NETSTAT.EXE
4204	NETSTAT.EXE
4204	NETSTAT.EXE
4204	NETSTAT.EXE
4204	NETSTAT.EXE
4204	NETSTAT.EXE
4204	NETSTAT.EXE

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

8 Explorer.EXE
Suspicious behavior: MapViewOfSection 7 IoCs

Processes:

STD 35 GA Plan_PDF.exeNETSTAT.EXE

pid process

3992 STD 35 GA Plan_PDF.exe
3992 STD 35 GA Plan_PDF.exe
3992 STD 35 GA Plan_PDF.exe
4204 NETSTAT.EXE
4204 NETSTAT.EXE
4204 NETSTAT.EXE
4204 NETSTAT.EXE
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

STD 35 GA Plan_PDF.exeNETSTAT.EXE

description pid process

Token: SeDebugPrivilege 3992 STD 35 GA Plan_PDF.exe
Token: SeDebugPrivilege 4204 NETSTAT.EXE

pid	process
8	Explorer.EXE

description	pid	process
Token: SeDebugPrivilege	3992	STD 35 GA Plan_PDF.exe
Token: SeDebugPrivilege	4204	NETSTAT.EXE

Suspicious use of WriteProcessMemory 21 IoCs

Processes:

STD 35 GA Plan_PDF.exeExplorer.EXENETSTAT.EXE

description	pid	process	target process
PID 2340 wrote to memory of 3992	2340	STD 35 GA Plan_PDF.exe	STD 35 GA Plan_PDF.exe
PID 2340 wrote to memory of 3992	2340	STD 35 GA Plan_PDF.exe	STD 35 GA Plan_PDF.exe
PID 2340 wrote to memory of 3992	2340	STD 35 GA Plan_PDF.exe	STD 35 GA Plan_PDF.exe
PID 2340 wrote to memory of 3992	2340	STD 35 GA Plan_PDF.exe	STD 35 GA Plan_PDF.exe
PID 2340 wrote to memory of 3992	2340	STD 35 GA Plan_PDF.exe	STD 35 GA Plan_PDF.exe
PID 2340 wrote to memory of 3992	2340	STD 35 GA Plan_PDF.exe	STD 35 GA Plan_PDF.exe
PID 8 wrote to memory of 4204	8	Explorer.EXE	NETSTAT.EXE
PID 8 wrote to memory of 4204	8	Explorer.EXE	NETSTAT.EXE
PID 8 wrote to memory of 4204	8	Explorer.EXE	NETSTAT.EXE
PID 4204 wrote to memory of 3132	4204	NETSTAT.EXE	cmd.exe
PID 4204 wrote to memory of 3132	4204	NETSTAT.EXE	cmd.exe
PID 4204 wrote to memory of 3132	4204	NETSTAT.EXE	cmd.exe
PID 4204 wrote to memory of 3228	4204	NETSTAT.EXE	cmd.exe
PID 4204 wrote to memory of 3228	4204	NETSTAT.EXE	cmd.exe
PID 4204 wrote to memory of 3228	4204	NETSTAT.EXE	cmd.exe
PID 4204 wrote to memory of 3640	4204	NETSTAT.EXE	cmd.exe
PID 4204 wrote to memory of 3640	4204	NETSTAT.EXE	cmd.exe
PID 4204 wrote to memory of 3640	4204	NETSTAT.EXE	cmd.exe
PID 4204 wrote to memory of 380	4204	NETSTAT.EXE	Firefox.exe
PID 4204 wrote to memory of 380	4204	NETSTAT.EXE	Firefox.exe
PID 4204 wrote to memory of 380	4204	NETSTAT.EXE	Firefox.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:8

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:2340

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:3992

C:\Windows\SysWOW64\autoconv.exe
"C:\Windows\SysWOW64\autoconv.exe"
2⤵
PID:1800

C:\Windows\SysWOW64\autoconv.exe
"C:\Windows\SysWOW64\autoconv.exe"
2⤵
PID:1308

C:\Windows\SysWOW64\autoconv.exe
"C:\Windows\SysWOW64\autoconv.exe"
2⤵
PID:4020

C:\Windows\SysWOW64\autoconv.exe
"C:\Windows\SysWOW64\autoconv.exe"
2⤵
PID:3668

C:\Windows\SysWOW64\NETSTAT.EXE
"C:\Windows\SysWOW64\NETSTAT.EXE"
2⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Drops file in Program Files directory
- Gathers network information
- Modifies Internet Explorer settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4204

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\STD 35 GA Plan_PDF.exe"
3⤵
PID:3132

C:\Windows\SysWOW64\cmd.exe
/c copy "C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Login Data" "C:\Users\Admin\AppData\Local\Temp\DB1" /V
3⤵
PID:3228

C:\Windows\SysWOW64\cmd.exe
/c copy "C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Login Data" "C:\Users\Admin\AppData\Local\Temp\DB1" /V
3⤵
PID:3640

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:380

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Command-Line Interface

1

T1059

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

2

T1112

Credential Access

Credentials in Files

1

T1081

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\DB1
Filesize
40KB

MD5
b608d407fc15adea97c26936bc6f03f6

SHA1
953e7420801c76393902c0d6bb56148947e41571

SHA256
b281ce54125d4250a80f48fcc02a8eea53f2c35c3b726e2512c3d493da0013bf

SHA512
cc96ddf4bf90d6aaa9d86803cb2aa30cd8e9b295aee1bd5544b88aeab63dc60bb1d4641e846c9771bab51aabbfbcd984c6d3ee83b96f5b65d09c0841d464b9e4

Download Submit
C:\Users\Admin\AppData\Local\Temp\DB1
Filesize
48KB

MD5
349e6eb110e34a08924d92f6b334801d

SHA1
bdfb289daff51890cc71697b6322aa4b35ec9169

SHA256
c9fd7be4579e4aa942e8c2b44ab10115fa6c2fe6afd0c584865413d9d53f3b2a

SHA512
2a635b815a5e117ea181ee79305ee1baf591459427acc5210d8c6c7e447be3513ead871c605eb3d32e4ab4111b2a335f26520d0ef8c1245a4af44e1faec44574

Download Submit
memory/8-151-0x0000000008EC0000-0x0000000009011000-memory.dmp

Filesize
1.3MB

Download
memory/8-149-0x0000000008EC0000-0x0000000009011000-memory.dmp

Filesize
1.3MB

Download
memory/8-141-0x00000000087B0000-0x0000000008951000-memory.dmp

Filesize
1.6MB

Download
memory/2340-133-0x0000000005760000-0x000000000576A000-memory.dmp

Filesize
40KB

Download
memory/2340-130-0x0000000000D30000-0x0000000000DDC000-memory.dmp

Filesize
688KB

Download
memory/2340-135-0x0000000001450000-0x00000000014B6000-memory.dmp

Filesize
408KB

Download
memory/2340-134-0x0000000008240000-0x00000000082DC000-memory.dmp

Filesize
624KB

Download
memory/2340-132-0x0000000005780000-0x0000000005812000-memory.dmp

Filesize
584KB

Download
memory/2340-131-0x0000000005C90000-0x0000000006234000-memory.dmp

Filesize
5.6MB

Download
memory/3132-144-0x0000000000000000-mapping.dmp

Download
memory/3228-152-0x0000000000000000-mapping.dmp

Download
memory/3640-154-0x0000000000000000-mapping.dmp

Download
memory/3992-136-0x0000000000000000-mapping.dmp

Download
memory/3992-143-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/3992-140-0x0000000001580000-0x0000000001591000-memory.dmp

Filesize
68KB

Download
memory/3992-139-0x00000000015A0000-0x00000000018EA000-memory.dmp

Filesize
3.3MB

Download
memory/3992-137-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/4204-145-0x00000000004C0000-0x00000000004CB000-memory.dmp

Filesize
44KB

Download
memory/4204-147-0x0000000000EE0000-0x000000000122A000-memory.dmp

Filesize
3.3MB

Download
memory/4204-148-0x0000000000CC0000-0x0000000000D50000-memory.dmp

Filesize
576KB

Download
memory/4204-146-0x0000000000450000-0x000000000047C000-memory.dmp

Filesize
176KB

Download
memory/4204-150-0x0000000000450000-0x000000000047C000-memory.dmp

Filesize
176KB

Download
memory/4204-142-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads