formbook | d8e0769ada04d3face55959134a7eee5e55ef10f65eedeae65d9218e4371ace4

General

Target

PO328632.exe
Size

777KB
MD5

9f5b32d6839c520b18b9ba182e3c47e7
SHA1

dac91fc3f2dcdc37262418f60b743b52770312b2
SHA256

e1791b23657d18fc636878f24a44a32f1a2ae4814668600b14b10c03e48c587c
SHA512

7e9e796be039ff6a60dd8fe5e2bc2d64634a85d0998267148ebbfd02e870faf241fc2cb9c178ddab8ef8a5e65bdeb0ad3db004bedd6439df54e1922667ebc5cc

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 1 IoCs

rat

Processes:

resource	yara_rule
behavioral2/memory/3968-137-0x0000000000A60000-0x0000000000A87000-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:

WWAHost.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	WWAHost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\JRSDW4K0CNY = "C:\\Program Files (x86)\\Njlwhcn\\ozshchjhin.exe"	WWAHost.exe

Executes dropped EXE 2 IoCs

Processes:

ozshchjhin.exeozshchjhin.exe

pid process

1868 ozshchjhin.exe
3076 ozshchjhin.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

pid	process
1868	ozshchjhin.exe
3076	ozshchjhin.exe

Suspicious use of SetThreadContext 4 IoCs

Processes:

PO328632.exePO328632.exeWWAHost.exeozshchjhin.exe

description	pid	process	target process
PID 4484 set thread context of 3744	4484	PO328632.exe	PO328632.exe
PID 3744 set thread context of 2812	3744	PO328632.exe	Explorer.EXE
PID 3968 set thread context of 2812	3968	WWAHost.exe	Explorer.EXE
PID 1868 set thread context of 3076	1868	ozshchjhin.exe	ozshchjhin.exe

Drops file in Program Files directory 4 IoCs

Processes:

WWAHost.exeExplorer.EXE

description	ioc	process
File opened for modification	C:\Program Files (x86)\Njlwhcn\ozshchjhin.exe	WWAHost.exe
File opened for modification	C:\Program Files (x86)\Njlwhcn	Explorer.EXE
File created	C:\Program Files (x86)\Njlwhcn\ozshchjhin.exe	Explorer.EXE
File opened for modification	C:\Program Files (x86)\Njlwhcn\ozshchjhin.exe	Explorer.EXE

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

WWAHost.exe

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

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

PO328632.exePO328632.exeWWAHost.exeozshchjhin.exeozshchjhin.exe

pid	process
4484	PO328632.exe
4484	PO328632.exe
3744	PO328632.exe
3744	PO328632.exe
3744	PO328632.exe
3744	PO328632.exe
3968	WWAHost.exe
3968	WWAHost.exe
3968	WWAHost.exe
3968	WWAHost.exe
3968	WWAHost.exe
3968	WWAHost.exe
3968	WWAHost.exe
3968	WWAHost.exe
3968	WWAHost.exe
3968	WWAHost.exe
3968	WWAHost.exe
3968	WWAHost.exe
3968	WWAHost.exe
3968	WWAHost.exe
3968	WWAHost.exe
3968	WWAHost.exe
3968	WWAHost.exe
3968	WWAHost.exe
3968	WWAHost.exe
3968	WWAHost.exe
3968	WWAHost.exe
3968	WWAHost.exe
3968	WWAHost.exe
3968	WWAHost.exe
3968	WWAHost.exe
3968	WWAHost.exe
3968	WWAHost.exe
3968	WWAHost.exe
3968	WWAHost.exe
3968	WWAHost.exe
3968	WWAHost.exe
3968	WWAHost.exe
3968	WWAHost.exe
3968	WWAHost.exe
3968	WWAHost.exe
3968	WWAHost.exe
3968	WWAHost.exe
3968	WWAHost.exe
1868	ozshchjhin.exe
1868	ozshchjhin.exe
3076	ozshchjhin.exe
3076	ozshchjhin.exe
3968	WWAHost.exe
3968	WWAHost.exe
3968	WWAHost.exe
3968	WWAHost.exe
3968	WWAHost.exe
3968	WWAHost.exe
3968	WWAHost.exe
3968	WWAHost.exe
3968	WWAHost.exe
3968	WWAHost.exe
3968	WWAHost.exe
3968	WWAHost.exe
3968	WWAHost.exe
3968	WWAHost.exe
3968	WWAHost.exe
3968	WWAHost.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

2812 Explorer.EXE

pid	process
2812	Explorer.EXE

Suspicious behavior: MapViewOfSection 9 IoCs

Processes:

PO328632.exePO328632.exeWWAHost.exeozshchjhin.exe

pid	process
4484	PO328632.exe
3744	PO328632.exe
3744	PO328632.exe
3744	PO328632.exe
3968	WWAHost.exe
3968	WWAHost.exe
3968	WWAHost.exe
3968	WWAHost.exe
1868	ozshchjhin.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

Processes:

PO328632.exeWWAHost.exeExplorer.EXEozshchjhin.exe

description	pid	process
Token: SeDebugPrivilege	3744	PO328632.exe
Token: SeDebugPrivilege	3968	WWAHost.exe
Token: SeShutdownPrivilege	2812	Explorer.EXE
Token: SeCreatePagefilePrivilege	2812	Explorer.EXE
Token: SeDebugPrivilege	3076	ozshchjhin.exe

Suspicious use of WriteProcessMemory 21 IoCs

Processes:

PO328632.exeExplorer.EXEWWAHost.exeozshchjhin.exe

description	pid	process	target process
PID 4484 wrote to memory of 3744	4484	PO328632.exe	PO328632.exe
PID 4484 wrote to memory of 3744	4484	PO328632.exe	PO328632.exe
PID 4484 wrote to memory of 3744	4484	PO328632.exe	PO328632.exe
PID 2812 wrote to memory of 3968	2812	Explorer.EXE	WWAHost.exe
PID 2812 wrote to memory of 3968	2812	Explorer.EXE	WWAHost.exe
PID 2812 wrote to memory of 3968	2812	Explorer.EXE	WWAHost.exe
PID 3968 wrote to memory of 1960	3968	WWAHost.exe	cmd.exe
PID 3968 wrote to memory of 1960	3968	WWAHost.exe	cmd.exe
PID 3968 wrote to memory of 1960	3968	WWAHost.exe	cmd.exe
PID 3968 wrote to memory of 3128	3968	WWAHost.exe	cmd.exe
PID 3968 wrote to memory of 3128	3968	WWAHost.exe	cmd.exe
PID 3968 wrote to memory of 3128	3968	WWAHost.exe	cmd.exe
PID 3968 wrote to memory of 2852	3968	WWAHost.exe	Firefox.exe
PID 3968 wrote to memory of 2852	3968	WWAHost.exe	Firefox.exe
PID 3968 wrote to memory of 2852	3968	WWAHost.exe	Firefox.exe
PID 2812 wrote to memory of 1868	2812	Explorer.EXE	ozshchjhin.exe
PID 2812 wrote to memory of 1868	2812	Explorer.EXE	ozshchjhin.exe
PID 2812 wrote to memory of 1868	2812	Explorer.EXE	ozshchjhin.exe
PID 1868 wrote to memory of 3076	1868	ozshchjhin.exe	ozshchjhin.exe
PID 1868 wrote to memory of 3076	1868	ozshchjhin.exe	ozshchjhin.exe
PID 1868 wrote to memory of 3076	1868	ozshchjhin.exe	ozshchjhin.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Drops file in Program Files directory
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2812

C:\Users\Admin\AppData\Local\Temp\PO328632.exe
"C:\Users\Admin\AppData\Local\Temp\PO328632.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:4484

C:\Users\Admin\AppData\Local\Temp\PO328632.exe
"C:\Users\Admin\AppData\Local\Temp\PO328632.exe"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:3744

C:\Windows\SysWOW64\WWAHost.exe
"C:\Windows\SysWOW64\WWAHost.exe"
2⤵
- Adds policy 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:3968

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\PO328632.exe"
3⤵
PID:1960

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:3128

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:2852

C:\Program Files (x86)\Njlwhcn\ozshchjhin.exe
"C:\Program Files (x86)\Njlwhcn\ozshchjhin.exe"
2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:1868

C:\Program Files (x86)\Njlwhcn\ozshchjhin.exe
"C:\Program Files (x86)\Njlwhcn\ozshchjhin.exe"
3⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3076

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

Credentials in Files

1

T1081

Discovery

Lateral Movement

Collection

Data from Local System

1

T1005

Exfiltration

Command and Control

Impact

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Downloads

C:\Program Files (x86)\Njlwhcn\ozshchjhin.exe
Filesize
777KB

MD5
9f5b32d6839c520b18b9ba182e3c47e7

SHA1
dac91fc3f2dcdc37262418f60b743b52770312b2

SHA256
e1791b23657d18fc636878f24a44a32f1a2ae4814668600b14b10c03e48c587c

SHA512
7e9e796be039ff6a60dd8fe5e2bc2d64634a85d0998267148ebbfd02e870faf241fc2cb9c178ddab8ef8a5e65bdeb0ad3db004bedd6439df54e1922667ebc5cc

Download Submit
C:\Program Files (x86)\Njlwhcn\ozshchjhin.exe
Filesize
777KB

MD5
9f5b32d6839c520b18b9ba182e3c47e7

SHA1
dac91fc3f2dcdc37262418f60b743b52770312b2

SHA256
e1791b23657d18fc636878f24a44a32f1a2ae4814668600b14b10c03e48c587c

SHA512
7e9e796be039ff6a60dd8fe5e2bc2d64634a85d0998267148ebbfd02e870faf241fc2cb9c178ddab8ef8a5e65bdeb0ad3db004bedd6439df54e1922667ebc5cc

Download Submit
C:\Program Files (x86)\Njlwhcn\ozshchjhin.exe
Filesize
777KB

MD5
9f5b32d6839c520b18b9ba182e3c47e7

SHA1
dac91fc3f2dcdc37262418f60b743b52770312b2

SHA256
e1791b23657d18fc636878f24a44a32f1a2ae4814668600b14b10c03e48c587c

SHA512
7e9e796be039ff6a60dd8fe5e2bc2d64634a85d0998267148ebbfd02e870faf241fc2cb9c178ddab8ef8a5e65bdeb0ad3db004bedd6439df54e1922667ebc5cc

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

MD5
b608d407fc15adea97c26936bc6f03f6

SHA1
953e7420801c76393902c0d6bb56148947e41571

SHA256
b281ce54125d4250a80f48fcc02a8eea53f2c35c3b726e2512c3d493da0013bf

SHA512
cc96ddf4bf90d6aaa9d86803cb2aa30cd8e9b295aee1bd5544b88aeab63dc60bb1d4641e846c9771bab51aabbfbcd984c6d3ee83b96f5b65d09c0841d464b9e4

Download Submit
memory/1868-144-0x0000000000000000-mapping.dmp

Download
memory/1960-139-0x0000000000000000-mapping.dmp

Download
memory/2812-141-0x0000000002BD0000-0x0000000002CAF000-memory.dmp

Filesize
892KB

Download
memory/2812-134-0x0000000008320000-0x00000000083F0000-memory.dmp

Filesize
832KB

Download
memory/3076-147-0x0000000000000000-mapping.dmp

Download
memory/3076-149-0x0000000000B80000-0x0000000000ECA000-memory.dmp

Filesize
3.3MB

Download
memory/3128-142-0x0000000000000000-mapping.dmp

Download
memory/3744-130-0x0000000000000000-mapping.dmp

Download
memory/3744-133-0x00000000005A0000-0x00000000005B0000-memory.dmp

Filesize
64KB

Download
memory/3744-132-0x0000000000AE0000-0x0000000000E2A000-memory.dmp

Filesize
3.3MB

Download
memory/3968-135-0x0000000000000000-mapping.dmp

Download
memory/3968-140-0x0000000001650000-0x00000000016DF000-memory.dmp

Filesize
572KB

Download
memory/3968-138-0x0000000001900000-0x0000000001C4A000-memory.dmp

Filesize
3.3MB

Download
memory/3968-137-0x0000000000A60000-0x0000000000A87000-memory.dmp

Filesize
156KB

Download
memory/3968-136-0x00000000004C0000-0x000000000059C000-memory.dmp

Filesize
880KB

Download
memory/4484-131-0x00000000022B0000-0x00000000022B9000-memory.dmp

Filesize
36KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads