formbook | 3904214c69427ca44fbe3dd2b567493d006578d13b50a22367dbbf547d7f714c

General

Target

PO0932083943974.exe
Size

351KB
MD5

1e8d5e2871ef3da902db085c1b5c9e4f
SHA1

a3e42499d53bcf961dfbaceca2c3fb5fc4d54364
SHA256

dee1fa115a3e06310b958baca7bf709144f770de027ab3c615f6937b7544cd75
SHA512

bbba879de92397a2141aaa4e780a99e1434e171d31dd2698e97363518b140635c20adb98718073f7d2b12935a14bde61b70ff7d5d528058c4a50794b865f2446

Score

10^/10

formbook xloader b6fg loader persistence rat spyware stealer suricata trojan

Malware Config

Extracted

Family

xloader

Version

2.0

Campaign

b6fg

Decoy

multlockmt5.com

mohajrannoor.com

robynhoodofretail.info

belinv.com

hotellasab.com

kibrismosad.com

xn--fxwm39aeb590h.xn--io0a7i

resetbrasil.com

tcsonhvac.com

theresav.net

bohoqi.info

machinafuturae.com

mambavault.com

xn--980am9a.top

yumiang.com

evntmonitor.com

83003kk.com

triterm.com

8800pe.com

silvanstudio.com

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 3 IoCs

rat

Processes:

resource	yara_rule
behavioral2/memory/2248-135-0x0000000000400000-0x0000000000427000-memory.dmp	xloader
behavioral2/memory/2248-137-0x0000000000400000-0x0000000000427000-memory.dmp	xloader
behavioral2/memory/4080-143-0x00000000010F0000-0x0000000001117000-memory.dmp	xloader

Adds policy Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

ipconfig.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	ipconfig.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\4HD0-6D8IR1 = "C:\\Program Files (x86)\\Qovbxn2sh\\1bsxnjxhbc.exe"	ipconfig.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
Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

Suspicious use of SetThreadContext 3 IoCs

Processes:

PO0932083943974.exevbc.exeipconfig.exe

description	pid	process	target process
PID 4232 set thread context of 2248	4232	PO0932083943974.exe	vbc.exe
PID 2248 set thread context of 1124	2248	vbc.exe	Explorer.EXE
PID 4080 set thread context of 1124	4080	ipconfig.exe	Explorer.EXE

Drops file in Program Files directory 1 IoCs

Processes:

ipconfig.exe

description ioc process

File opened for modification C:\Program Files (x86)\Qovbxn2sh\1bsxnjxhbc.exe ipconfig.exe
Gathers network information 2 TTPs 1 IoCs
Uses commandline utility to view network configuration.

System Information Discovery
T1082

Command-Line Interface
T1059

Processes:

ipconfig.exe

pid process

4080 ipconfig.exe

description	ioc	process
File opened for modification	C:\Program Files (x86)\Qovbxn2sh\1bsxnjxhbc.exe	ipconfig.exe

pid	process
4080	ipconfig.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

ipconfig.exe

description	ioc	process
Key created	\Registry\User\S-1-5-21-2632097139-1792035885-811742494-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	ipconfig.exe

Suspicious behavior: EnumeratesProcesses 32 IoCs

Processes:

vbc.exeipconfig.exe

pid	process
2248	vbc.exe
2248	vbc.exe
2248	vbc.exe
2248	vbc.exe
4080	ipconfig.exe
4080	ipconfig.exe
4080	ipconfig.exe
4080	ipconfig.exe
4080	ipconfig.exe
4080	ipconfig.exe
4080	ipconfig.exe
4080	ipconfig.exe
4080	ipconfig.exe
4080	ipconfig.exe
4080	ipconfig.exe
4080	ipconfig.exe
4080	ipconfig.exe
4080	ipconfig.exe
4080	ipconfig.exe
4080	ipconfig.exe
4080	ipconfig.exe
4080	ipconfig.exe
4080	ipconfig.exe
4080	ipconfig.exe
4080	ipconfig.exe
4080	ipconfig.exe
4080	ipconfig.exe
4080	ipconfig.exe
4080	ipconfig.exe
4080	ipconfig.exe
4080	ipconfig.exe
4080	ipconfig.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

1124 Explorer.EXE
Suspicious behavior: MapViewOfSection 7 IoCs

Processes:

vbc.exeipconfig.exe

pid process

2248 vbc.exe
2248 vbc.exe
2248 vbc.exe
4080 ipconfig.exe
4080 ipconfig.exe
4080 ipconfig.exe
4080 ipconfig.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

vbc.exeipconfig.exe

description pid process

Token: SeDebugPrivilege 2248 vbc.exe
Token: SeDebugPrivilege 4080 ipconfig.exe

pid	process
1124	Explorer.EXE

description	pid	process
Token: SeDebugPrivilege	2248	vbc.exe
Token: SeDebugPrivilege	4080	ipconfig.exe

Suspicious use of WriteProcessMemory 18 IoCs

Processes:

PO0932083943974.exeExplorer.EXEipconfig.exe

description	pid	process	target process
PID 4232 wrote to memory of 2248	4232	PO0932083943974.exe	vbc.exe
PID 4232 wrote to memory of 2248	4232	PO0932083943974.exe	vbc.exe
PID 4232 wrote to memory of 2248	4232	PO0932083943974.exe	vbc.exe
PID 4232 wrote to memory of 2248	4232	PO0932083943974.exe	vbc.exe
PID 4232 wrote to memory of 2248	4232	PO0932083943974.exe	vbc.exe
PID 4232 wrote to memory of 2248	4232	PO0932083943974.exe	vbc.exe
PID 1124 wrote to memory of 4080	1124	Explorer.EXE	ipconfig.exe
PID 1124 wrote to memory of 4080	1124	Explorer.EXE	ipconfig.exe
PID 1124 wrote to memory of 4080	1124	Explorer.EXE	ipconfig.exe
PID 4080 wrote to memory of 1572	4080	ipconfig.exe	cmd.exe
PID 4080 wrote to memory of 1572	4080	ipconfig.exe	cmd.exe
PID 4080 wrote to memory of 1572	4080	ipconfig.exe	cmd.exe
PID 4080 wrote to memory of 3584	4080	ipconfig.exe	cmd.exe
PID 4080 wrote to memory of 3584	4080	ipconfig.exe	cmd.exe
PID 4080 wrote to memory of 3584	4080	ipconfig.exe	cmd.exe
PID 4080 wrote to memory of 3432	4080	ipconfig.exe	Firefox.exe
PID 4080 wrote to memory of 3432	4080	ipconfig.exe	Firefox.exe
PID 4080 wrote to memory of 3432	4080	ipconfig.exe	Firefox.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:1124

C:\Users\Admin\AppData\Local\Temp\PO0932083943974.exe
"C:\Users\Admin\AppData\Local\Temp\PO0932083943974.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4232

C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
"{path}"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:2248

C:\Windows\SysWOW64\ipconfig.exe
"C:\Windows\SysWOW64\ipconfig.exe"
2⤵
- Adds policy 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:4080

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
3⤵
PID:1572

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:3584

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:3432

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scripting

1

T1064

Command-Line Interface

1

T1059

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

2

T1112

Scripting

1

T1064

Credential Access

Credentials in Files

1

T1081

Discovery

System Information Discovery

1

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
memory/1124-140-0x0000000007EC0000-0x0000000008064000-memory.dmp

Filesize
1.6MB

Download
memory/1124-147-0x0000000002B80000-0x0000000002C78000-memory.dmp

Filesize
992KB

Download
memory/1572-144-0x0000000000000000-mapping.dmp

Download
memory/2248-139-0x0000000001550000-0x0000000001560000-memory.dmp

Filesize
64KB

Download
memory/2248-135-0x0000000000400000-0x0000000000427000-memory.dmp

Filesize
156KB

Download
memory/2248-137-0x0000000000400000-0x0000000000427000-memory.dmp

Filesize
156KB

Download
memory/2248-138-0x00000000019D0000-0x0000000001D1A000-memory.dmp

Filesize
3.3MB

Download
memory/2248-134-0x0000000000000000-mapping.dmp

Download
memory/3584-148-0x0000000000000000-mapping.dmp

Download
memory/4080-145-0x0000000001920000-0x0000000001C6A000-memory.dmp

Filesize
3.3MB

Download
memory/4080-142-0x0000000000B70000-0x0000000000B7B000-memory.dmp

Filesize
44KB

Download
memory/4080-143-0x00000000010F0000-0x0000000001117000-memory.dmp

Filesize
156KB

Download
memory/4080-141-0x0000000000000000-mapping.dmp

Download
memory/4080-146-0x0000000001C70000-0x0000000001CFF000-memory.dmp

Filesize
572KB

Download
memory/4232-133-0x0000000004BE0000-0x0000000004C7C000-memory.dmp

Filesize
624KB

Download
memory/4232-132-0x0000000004A30000-0x0000000004AC2000-memory.dmp

Filesize
584KB

Download
memory/4232-130-0x0000000000040000-0x000000000009E000-memory.dmp

Filesize
376KB

Download
memory/4232-131-0x00000000050F0000-0x0000000005694000-memory.dmp

Filesize
5.6MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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