formbook | 7b4c1bf9a15a419080fe02866aa26f162f79d5e01763c6af5915b07988556223

General

Target

t0ID2yWRERNRIz4.exe
Size

818KB
MD5

2fa809111f6953a10bcae39ef3f57aa7
SHA1

9415a9c252e39776162749c9131d96274cd6cac9
SHA256

7b4c1bf9a15a419080fe02866aa26f162f79d5e01763c6af5915b07988556223
SHA512

adb6b340237a62af5fced4c819bfa92317e15a4062dab379d97a1b2ecd9e5ace9fca9330872f7d4f01c2a0b96035d9a69a376d7f7c812fece8584326447933b9

Score

10^/10

formbook xloader gjeh loader persistence rat spyware stealer suricata trojan

Malware Config

Extracted

Family

xloader

Version

2.5

Campaign

gjeh

C2

http://www.getaudionow.com/gjeh/

Decoy

carmator.com

bsbqrp.com

siemens-mp.com

dunnfloorcoverings.com

cpassminimedicalschools.info

howtodesignyourhomeoffice.com

famliytaste.com

freesocialmarketing.com

jejuhaenyeo.net

tradebot.icu

arzug.com

carrefour-solucoes.online

ladyom.com

aoironote.com

newmexicocarwreckattorney.com

wealthpatternsllc.net

thinkpinkalicous.com

prajapati.company

bjhwky.com

jsdigitalekuns.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/3812-125-0x0000000000400000-0x0000000000429000-memory.dmp	xloader
behavioral2/memory/3812-126-0x000000000041D460-mapping.dmp	xloader
behavioral2/memory/3768-133-0x0000000004DD0000-0x0000000004DF9000-memory.dmp	xloader

Executes dropped EXE 1 IoCs

Processes:

d8tpkrdfl.exe

pid process

3104 d8tpkrdfl.exe

pid	process
3104	d8tpkrdfl.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

chkdsk.exe

description	ioc	process
Key created	\Registry\Machine\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run	chkdsk.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\XRJ8BFHP = "C:\\Program Files (x86)\\B0dfl\\d8tpkrdfl.exe"	chkdsk.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

t0ID2yWRERNRIz4.exeMSBuild.exechkdsk.exe

description	pid	process	target process
PID 628 set thread context of 3812	628	t0ID2yWRERNRIz4.exe	MSBuild.exe
PID 3812 set thread context of 2996	3812	MSBuild.exe	Explorer.EXE
PID 3768 set thread context of 2996	3768	chkdsk.exe	Explorer.EXE

Drops file in Program Files directory 4 IoCs

Processes:

Explorer.EXEchkdsk.exe

description	ioc	process
File opened for modification	C:\Program Files (x86)\B0dfl\d8tpkrdfl.exe	Explorer.EXE
File opened for modification	C:\Program Files (x86)\B0dfl\d8tpkrdfl.exe	chkdsk.exe
File opened for modification	C:\Program Files (x86)\B0dfl	Explorer.EXE
File created	C:\Program Files (x86)\B0dfl\d8tpkrdfl.exe	Explorer.EXE

Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry
T1012

System Information Discovery
T1082

Processes:

chkdsk.exe

description ioc process

Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier chkdsk.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	chkdsk.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

chkdsk.exe

description	ioc	process
Key created	\Registry\User\S-1-5-21-1594587808-2047097707-2163810515-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	chkdsk.exe

Modifies registry class 9 IoCs

Processes:

t0ID2yWRERNRIz4.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000_Classes\GMKAssembler.Project\Shell\open\command	t0ID2yWRERNRIz4.exe
Key created	\REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000_Classes\GMKAssembler.Project\Shell	t0ID2yWRERNRIz4.exe
Key created	\REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000_Classes\GMKAssembler.Project\Shell\open	t0ID2yWRERNRIz4.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000_Classes\GMKAssembler.Project\Shell\open\command\ = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\t0ID2yWRERNRIz4.exe\" \"%1\""	t0ID2yWRERNRIz4.exe
Key created	\REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000_Classes\GMKAssembler.Project\DefaultIcon	t0ID2yWRERNRIz4.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000_Classes\GMKAssembler.Project\DefaultIcon\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\t0ID2yWRERNRIz4.exe"	t0ID2yWRERNRIz4.exe
Key created	\REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000_Classes\.gmkasm	t0ID2yWRERNRIz4.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000_Classes\.gmkasm\ = "GMKAssembler.Project"	t0ID2yWRERNRIz4.exe
Key created	\REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000_Classes\GMKAssembler.Project	t0ID2yWRERNRIz4.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

t0ID2yWRERNRIz4.exeMSBuild.exechkdsk.exe

pid	process
628	t0ID2yWRERNRIz4.exe
628	t0ID2yWRERNRIz4.exe
3812	MSBuild.exe
3812	MSBuild.exe
3812	MSBuild.exe
3812	MSBuild.exe
3768	chkdsk.exe
3768	chkdsk.exe
3768	chkdsk.exe
3768	chkdsk.exe
3768	chkdsk.exe
3768	chkdsk.exe
3768	chkdsk.exe
3768	chkdsk.exe
3768	chkdsk.exe
3768	chkdsk.exe
3768	chkdsk.exe
3768	chkdsk.exe
3768	chkdsk.exe
3768	chkdsk.exe
3768	chkdsk.exe
3768	chkdsk.exe
3768	chkdsk.exe
3768	chkdsk.exe
3768	chkdsk.exe
3768	chkdsk.exe
3768	chkdsk.exe
3768	chkdsk.exe
3768	chkdsk.exe
3768	chkdsk.exe
3768	chkdsk.exe
3768	chkdsk.exe
3768	chkdsk.exe
3768	chkdsk.exe
3768	chkdsk.exe
3768	chkdsk.exe
3768	chkdsk.exe
3768	chkdsk.exe
3768	chkdsk.exe
3768	chkdsk.exe
3768	chkdsk.exe
3768	chkdsk.exe
3768	chkdsk.exe
3768	chkdsk.exe
3768	chkdsk.exe
3768	chkdsk.exe
3768	chkdsk.exe
3768	chkdsk.exe
3768	chkdsk.exe
3768	chkdsk.exe
3768	chkdsk.exe
3768	chkdsk.exe
3768	chkdsk.exe
3768	chkdsk.exe
3768	chkdsk.exe
3768	chkdsk.exe
3768	chkdsk.exe
3768	chkdsk.exe
3768	chkdsk.exe
3768	chkdsk.exe
3768	chkdsk.exe
3768	chkdsk.exe
3768	chkdsk.exe
3768	chkdsk.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

2996 Explorer.EXE
Suspicious behavior: MapViewOfSection 7 IoCs

Processes:

MSBuild.exechkdsk.exe

pid process

3812 MSBuild.exe
3812 MSBuild.exe
3812 MSBuild.exe
3768 chkdsk.exe
3768 chkdsk.exe
3768 chkdsk.exe
3768 chkdsk.exe

pid	process
2996	Explorer.EXE

pid	process
3812	MSBuild.exe
3812	MSBuild.exe
3812	MSBuild.exe
3768	chkdsk.exe
3768	chkdsk.exe
3768	chkdsk.exe
3768	chkdsk.exe

Suspicious use of AdjustPrivilegeToken 25 IoCs

Processes:

t0ID2yWRERNRIz4.exeMSBuild.exechkdsk.exeExplorer.EXE

description	pid	process
Token: SeDebugPrivilege	628	t0ID2yWRERNRIz4.exe
Token: SeDebugPrivilege	3812	MSBuild.exe
Token: SeDebugPrivilege	3768	chkdsk.exe
Token: SeShutdownPrivilege	2996	Explorer.EXE
Token: SeCreatePagefilePrivilege	2996	Explorer.EXE
Token: SeShutdownPrivilege	2996	Explorer.EXE
Token: SeCreatePagefilePrivilege	2996	Explorer.EXE
Token: SeShutdownPrivilege	2996	Explorer.EXE
Token: SeCreatePagefilePrivilege	2996	Explorer.EXE
Token: SeShutdownPrivilege	2996	Explorer.EXE
Token: SeCreatePagefilePrivilege	2996	Explorer.EXE
Token: SeShutdownPrivilege	2996	Explorer.EXE
Token: SeCreatePagefilePrivilege	2996	Explorer.EXE
Token: SeShutdownPrivilege	2996	Explorer.EXE
Token: SeCreatePagefilePrivilege	2996	Explorer.EXE
Token: SeShutdownPrivilege	2996	Explorer.EXE
Token: SeCreatePagefilePrivilege	2996	Explorer.EXE
Token: SeShutdownPrivilege	2996	Explorer.EXE
Token: SeCreatePagefilePrivilege	2996	Explorer.EXE
Token: SeShutdownPrivilege	2996	Explorer.EXE
Token: SeCreatePagefilePrivilege	2996	Explorer.EXE
Token: SeShutdownPrivilege	2996	Explorer.EXE
Token: SeCreatePagefilePrivilege	2996	Explorer.EXE
Token: SeShutdownPrivilege	2996	Explorer.EXE
Token: SeCreatePagefilePrivilege	2996	Explorer.EXE

Suspicious use of WriteProcessMemory 18 IoCs

Processes:

t0ID2yWRERNRIz4.exeExplorer.EXEchkdsk.exe

description	pid	process	target process
PID 628 wrote to memory of 3812	628	t0ID2yWRERNRIz4.exe	MSBuild.exe
PID 628 wrote to memory of 3812	628	t0ID2yWRERNRIz4.exe	MSBuild.exe
PID 628 wrote to memory of 3812	628	t0ID2yWRERNRIz4.exe	MSBuild.exe
PID 628 wrote to memory of 3812	628	t0ID2yWRERNRIz4.exe	MSBuild.exe
PID 628 wrote to memory of 3812	628	t0ID2yWRERNRIz4.exe	MSBuild.exe
PID 628 wrote to memory of 3812	628	t0ID2yWRERNRIz4.exe	MSBuild.exe
PID 2996 wrote to memory of 3768	2996	Explorer.EXE	chkdsk.exe
PID 2996 wrote to memory of 3768	2996	Explorer.EXE	chkdsk.exe
PID 2996 wrote to memory of 3768	2996	Explorer.EXE	chkdsk.exe
PID 3768 wrote to memory of 1244	3768	chkdsk.exe	cmd.exe
PID 3768 wrote to memory of 1244	3768	chkdsk.exe	cmd.exe
PID 3768 wrote to memory of 1244	3768	chkdsk.exe	cmd.exe
PID 3768 wrote to memory of 4032	3768	chkdsk.exe	Firefox.exe
PID 3768 wrote to memory of 4032	3768	chkdsk.exe	Firefox.exe
PID 2996 wrote to memory of 3104	2996	Explorer.EXE	d8tpkrdfl.exe
PID 2996 wrote to memory of 3104	2996	Explorer.EXE	d8tpkrdfl.exe
PID 2996 wrote to memory of 3104	2996	Explorer.EXE	d8tpkrdfl.exe
PID 3768 wrote to memory of 4032	3768	chkdsk.exe	Firefox.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:2996

C:\Users\Admin\AppData\Local\Temp\t0ID2yWRERNRIz4.exe
"C:\Users\Admin\AppData\Local\Temp\t0ID2yWRERNRIz4.exe"
2⤵
- Suspicious use of SetThreadContext
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:628

C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:3812

C:\Windows\SysWOW64\chkdsk.exe
"C:\Windows\SysWOW64\chkdsk.exe"
2⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Drops file in Program Files directory
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3768

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
3⤵
PID:1244

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:4032

C:\Program Files (x86)\B0dfl\d8tpkrdfl.exe
"C:\Program Files (x86)\B0dfl\d8tpkrdfl.exe"
2⤵
- Executes dropped EXE
PID:3104

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

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Downloads

C:\Program Files (x86)\B0dfl\d8tpkrdfl.exe
MD5
9af17c8393f0970ee5136bd3ffa27001

SHA1
4b285b72c1a11285a25f31f2597e090da6bbc049

SHA256
71d6a7a3fe5f8dc878cd5bdeca0e09177efb85c01e9a8a10a95262cabefaa019

SHA512
b90f7de7d5ce72dccb264c7ba609e173c529b9d99ed9a63f88632bc58b1a994bbb727365f519c73b979f8918bd6de3c39a9f0347eb3a4bccdce4b2772a6516a3

Download Submit
C:\Program Files (x86)\B0dfl\d8tpkrdfl.exe
MD5
9af17c8393f0970ee5136bd3ffa27001

SHA1
4b285b72c1a11285a25f31f2597e090da6bbc049

SHA256
71d6a7a3fe5f8dc878cd5bdeca0e09177efb85c01e9a8a10a95262cabefaa019

SHA512
b90f7de7d5ce72dccb264c7ba609e173c529b9d99ed9a63f88632bc58b1a994bbb727365f519c73b979f8918bd6de3c39a9f0347eb3a4bccdce4b2772a6516a3

Download Submit
memory/628-123-0x0000000007AF0000-0x0000000007B56000-memory.dmp

Filesize
408KB

Download
memory/628-116-0x0000000005200000-0x0000000005201000-memory.dmp

Filesize
4KB

Download
memory/628-118-0x0000000004D00000-0x0000000004D01000-memory.dmp

Filesize
4KB

Download
memory/628-120-0x0000000005A10000-0x0000000005A11000-memory.dmp

Filesize
4KB

Download
memory/628-121-0x0000000005DD0000-0x0000000005DED000-memory.dmp

Filesize
116KB

Download
memory/628-122-0x00000000078B0000-0x00000000078B1000-memory.dmp

Filesize
4KB

Download
memory/628-114-0x0000000000150000-0x0000000000151000-memory.dmp

Filesize
4KB

Download
memory/628-124-0x0000000007BF0000-0x0000000007C26000-memory.dmp

Filesize
216KB

Download
memory/628-117-0x0000000004C40000-0x0000000004C41000-memory.dmp

Filesize
4KB

Download
memory/628-119-0x0000000004CF0000-0x0000000004CF1000-memory.dmp

Filesize
4KB

Download
memory/1244-131-0x0000000000000000-mapping.dmp

Download
memory/2996-129-0x00000000053F0000-0x0000000005567000-memory.dmp

Filesize
1.5MB

Download
memory/2996-136-0x0000000005570000-0x00000000056EE000-memory.dmp

Filesize
1.5MB

Download
memory/3104-137-0x0000000000000000-mapping.dmp

Download
memory/3104-143-0x0000000004CC0000-0x0000000004CC1000-memory.dmp

Filesize
4KB

Download
memory/3104-142-0x0000000004CD0000-0x0000000004CD1000-memory.dmp

Filesize
4KB

Download
memory/3104-141-0x0000000000A40000-0x0000000000A41000-memory.dmp

Filesize
4KB

Download
memory/3104-140-0x0000000000290000-0x0000000000291000-memory.dmp

Filesize
4KB

Download
memory/3768-130-0x0000000000000000-mapping.dmp

Download
memory/3768-135-0x00000000054B0000-0x0000000005540000-memory.dmp

Filesize
576KB

Download
memory/3768-133-0x0000000004DD0000-0x0000000004DF9000-memory.dmp

Filesize
164KB

Download
memory/3768-134-0x0000000005000000-0x000000000514A000-memory.dmp

Filesize
1.3MB

Download
memory/3768-132-0x0000000000180000-0x000000000018A000-memory.dmp

Filesize
40KB

Download
memory/3812-127-0x0000000001080000-0x00000000013A0000-memory.dmp

Filesize
3.1MB

Download
memory/3812-128-0x0000000000C20000-0x0000000000D6A000-memory.dmp

Filesize
1.3MB

Download
memory/3812-126-0x000000000041D460-mapping.dmp

Download
memory/3812-125-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/4032-145-0x00007FF645F20000-0x00007FF645FB3000-memory.dmp

Filesize
588KB

Download
memory/4032-144-0x0000000000000000-mapping.dmp

Download
memory/4032-146-0x000001E675770000-0x000001E675814000-memory.dmp

Filesize
656KB

Download

Resubmissions

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

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Downloads