formbook | b980dfcce93e9140d8ce71151f2f385026b8cebc195b71055707e1468ad0131b

General

Target

RFQ#.exe
Size

296KB
MD5

3838c43e12f0c22ecf9a9a0c1deb1d30
SHA1

7b9d8e4a093672411f71f1cf6a7fe6803c61773c
SHA256

b980dfcce93e9140d8ce71151f2f385026b8cebc195b71055707e1468ad0131b
SHA512

f0f860a56500b449b29558dc6e8860ce4441cee2612cc22c7cb9aaf5106062e290e3b3313dd0eef55fe1678791992f0502dbda9d0350110b7f7591853445935c

Score

10^/10

formbook xloader unzn loader persistence rat spyware stealer trojan

Malware Config

Extracted

Family

xloader

Version

2.5

Campaign

unzn

C2

http://www.davanamays.com/unzn/

Decoy

xiulf.com

highcountrymortar.com

523561.com

marketingagency.tools

ganmovie.net

nationaalcontactpunt.com

sirrbter.com

begizas.xyz

missimi-fashion.com

munixc.info

daas.support

spaceworbc.com

faithtruthresolve.com

gymkub.com

thegrayverse.xyz

artisanmakefurniture.com

029tryy.com

ijuubx.biz

iphone13promax.club

techuniversus.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

Xloader Payload 4 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/1124-57-0x0000000000400000-0x0000000000429000-memory.dmp	xloader
behavioral1/memory/1124-58-0x000000000041D430-mapping.dmp	xloader
behavioral1/memory/624-66-0x0000000000080000-0x00000000000A9000-memory.dmp	xloader
behavioral1/memory/1792-78-0x000000000041D430-mapping.dmp	xloader

Executes dropped EXE 2 IoCs

Processes:

igfx7nm81n.exeigfx7nm81n.exe

pid process

1872 igfx7nm81n.exe
1792 igfx7nm81n.exe
Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

680 cmd.exe
Loads dropped DLL 2 IoCs

Processes:

RFQ#.exeigfx7nm81n.exe

pid process

320 RFQ#.exe
1872 igfx7nm81n.exe

pid	process
1872	igfx7nm81n.exe
1792	igfx7nm81n.exe

pid	process
680	cmd.exe

pid	process
320	RFQ#.exe
1872	igfx7nm81n.exe

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\6L0DZLEHW = "C:\\Program Files (x86)\\Ambs\\igfx7nm81n.exe"	NETSTAT.EXE

Suspicious use of SetThreadContext 4 IoCs

Processes:

RFQ#.exeRFQ#.exeNETSTAT.EXEigfx7nm81n.exe

description	pid	process	target process
PID 320 set thread context of 1124	320	RFQ#.exe	RFQ#.exe
PID 1124 set thread context of 1260	1124	RFQ#.exe	Explorer.EXE
PID 624 set thread context of 1260	624	NETSTAT.EXE	Explorer.EXE
PID 1872 set thread context of 1792	1872	igfx7nm81n.exe	igfx7nm81n.exe

Drops file in Program Files directory 2 IoCs

Processes:

NETSTAT.EXEExplorer.EXE

description	ioc	process
File opened for modification	C:\Program Files (x86)\Ambs\igfx7nm81n.exe	NETSTAT.EXE
File created	C:\Program Files (x86)\Ambs\igfx7nm81n.exe	Explorer.EXE

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

NSIS installer 6 IoCs

installer

Processes:

resource	yara_rule
C:\Program Files (x86)\Ambs\igfx7nm81n.exe	nsis_installer_1
C:\Program Files (x86)\Ambs\igfx7nm81n.exe	nsis_installer_2
C:\Program Files (x86)\Ambs\igfx7nm81n.exe	nsis_installer_1
C:\Program Files (x86)\Ambs\igfx7nm81n.exe	nsis_installer_2
C:\Program Files (x86)\Ambs\igfx7nm81n.exe	nsis_installer_1
C:\Program Files (x86)\Ambs\igfx7nm81n.exe	nsis_installer_2

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

624 NETSTAT.EXE

pid	process
624	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-1-5-21-2955169046-2371869340-1800780948-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	NETSTAT.EXE

Suspicious behavior: EnumeratesProcesses 29 IoCs

Processes:

RFQ#.exeNETSTAT.EXEigfx7nm81n.exe

pid	process
1124	RFQ#.exe
1124	RFQ#.exe
624	NETSTAT.EXE
624	NETSTAT.EXE
624	NETSTAT.EXE
624	NETSTAT.EXE
624	NETSTAT.EXE
624	NETSTAT.EXE
624	NETSTAT.EXE
624	NETSTAT.EXE
624	NETSTAT.EXE
624	NETSTAT.EXE
624	NETSTAT.EXE
624	NETSTAT.EXE
624	NETSTAT.EXE
624	NETSTAT.EXE
624	NETSTAT.EXE
624	NETSTAT.EXE
624	NETSTAT.EXE
624	NETSTAT.EXE
624	NETSTAT.EXE
624	NETSTAT.EXE
624	NETSTAT.EXE
624	NETSTAT.EXE
1792	igfx7nm81n.exe
624	NETSTAT.EXE
624	NETSTAT.EXE
624	NETSTAT.EXE
624	NETSTAT.EXE

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

1260 Explorer.EXE
Suspicious behavior: MapViewOfSection 7 IoCs

Processes:

RFQ#.exeNETSTAT.EXE

pid process

1124 RFQ#.exe
1124 RFQ#.exe
1124 RFQ#.exe
624 NETSTAT.EXE
624 NETSTAT.EXE
624 NETSTAT.EXE
624 NETSTAT.EXE
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

RFQ#.exeNETSTAT.EXEigfx7nm81n.exe

description pid process

Token: SeDebugPrivilege 1124 RFQ#.exe
Token: SeDebugPrivilege 624 NETSTAT.EXE
Token: SeDebugPrivilege 1792 igfx7nm81n.exe
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

Explorer.EXE

pid process

1260 Explorer.EXE
1260 Explorer.EXE
Suspicious use of SendNotifyMessage 2 IoCs

Processes:

Explorer.EXE

pid process

1260 Explorer.EXE
1260 Explorer.EXE

pid	process
1260	Explorer.EXE

description	pid	process
Token: SeDebugPrivilege	1124	RFQ#.exe
Token: SeDebugPrivilege	624	NETSTAT.EXE
Token: SeDebugPrivilege	1792	igfx7nm81n.exe

pid	process
1260	Explorer.EXE
1260	Explorer.EXE

pid	process
1260	Explorer.EXE
1260	Explorer.EXE

Suspicious use of WriteProcessMemory 31 IoCs

Processes:

RFQ#.exeExplorer.EXENETSTAT.EXEigfx7nm81n.exe

description	pid	process	target process
PID 320 wrote to memory of 1124	320	RFQ#.exe	RFQ#.exe
PID 320 wrote to memory of 1124	320	RFQ#.exe	RFQ#.exe
PID 320 wrote to memory of 1124	320	RFQ#.exe	RFQ#.exe
PID 320 wrote to memory of 1124	320	RFQ#.exe	RFQ#.exe
PID 320 wrote to memory of 1124	320	RFQ#.exe	RFQ#.exe
PID 320 wrote to memory of 1124	320	RFQ#.exe	RFQ#.exe
PID 320 wrote to memory of 1124	320	RFQ#.exe	RFQ#.exe
PID 1260 wrote to memory of 624	1260	Explorer.EXE	NETSTAT.EXE
PID 1260 wrote to memory of 624	1260	Explorer.EXE	NETSTAT.EXE
PID 1260 wrote to memory of 624	1260	Explorer.EXE	NETSTAT.EXE
PID 1260 wrote to memory of 624	1260	Explorer.EXE	NETSTAT.EXE
PID 624 wrote to memory of 680	624	NETSTAT.EXE	cmd.exe
PID 624 wrote to memory of 680	624	NETSTAT.EXE	cmd.exe
PID 624 wrote to memory of 680	624	NETSTAT.EXE	cmd.exe
PID 624 wrote to memory of 680	624	NETSTAT.EXE	cmd.exe
PID 624 wrote to memory of 1816	624	NETSTAT.EXE	Firefox.exe
PID 624 wrote to memory of 1816	624	NETSTAT.EXE	Firefox.exe
PID 624 wrote to memory of 1816	624	NETSTAT.EXE	Firefox.exe
PID 624 wrote to memory of 1816	624	NETSTAT.EXE	Firefox.exe
PID 1260 wrote to memory of 1872	1260	Explorer.EXE	igfx7nm81n.exe
PID 1260 wrote to memory of 1872	1260	Explorer.EXE	igfx7nm81n.exe
PID 1260 wrote to memory of 1872	1260	Explorer.EXE	igfx7nm81n.exe
PID 1260 wrote to memory of 1872	1260	Explorer.EXE	igfx7nm81n.exe
PID 1872 wrote to memory of 1792	1872	igfx7nm81n.exe	igfx7nm81n.exe
PID 1872 wrote to memory of 1792	1872	igfx7nm81n.exe	igfx7nm81n.exe
PID 1872 wrote to memory of 1792	1872	igfx7nm81n.exe	igfx7nm81n.exe
PID 1872 wrote to memory of 1792	1872	igfx7nm81n.exe	igfx7nm81n.exe
PID 1872 wrote to memory of 1792	1872	igfx7nm81n.exe	igfx7nm81n.exe
PID 1872 wrote to memory of 1792	1872	igfx7nm81n.exe	igfx7nm81n.exe
PID 1872 wrote to memory of 1792	1872	igfx7nm81n.exe	igfx7nm81n.exe
PID 624 wrote to memory of 1816	624	NETSTAT.EXE	Firefox.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Drops file in Program Files directory
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1260

C:\Users\Admin\AppData\Local\Temp\RFQ#.exe
"C:\Users\Admin\AppData\Local\Temp\RFQ#.exe"
2⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:320

C:\Users\Admin\AppData\Local\Temp\RFQ#.exe
"C:\Users\Admin\AppData\Local\Temp\RFQ#.exe"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:1124

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:624

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\RFQ#.exe"
3⤵
- Deletes itself
PID:680

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:1816

C:\Program Files (x86)\Ambs\igfx7nm81n.exe
"C:\Program Files (x86)\Ambs\igfx7nm81n.exe"
2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1872

C:\Program Files (x86)\Ambs\igfx7nm81n.exe
"C:\Program Files (x86)\Ambs\igfx7nm81n.exe"
3⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1792

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

Discovery

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Program Files (x86)\Ambs\igfx7nm81n.exe
MD5
3838c43e12f0c22ecf9a9a0c1deb1d30

SHA1
7b9d8e4a093672411f71f1cf6a7fe6803c61773c

SHA256
b980dfcce93e9140d8ce71151f2f385026b8cebc195b71055707e1468ad0131b

SHA512
f0f860a56500b449b29558dc6e8860ce4441cee2612cc22c7cb9aaf5106062e290e3b3313dd0eef55fe1678791992f0502dbda9d0350110b7f7591853445935c

Download Submit
C:\Program Files (x86)\Ambs\igfx7nm81n.exe
MD5
3838c43e12f0c22ecf9a9a0c1deb1d30

SHA1
7b9d8e4a093672411f71f1cf6a7fe6803c61773c

SHA256
b980dfcce93e9140d8ce71151f2f385026b8cebc195b71055707e1468ad0131b

SHA512
f0f860a56500b449b29558dc6e8860ce4441cee2612cc22c7cb9aaf5106062e290e3b3313dd0eef55fe1678791992f0502dbda9d0350110b7f7591853445935c

Download Submit
C:\Program Files (x86)\Ambs\igfx7nm81n.exe
MD5
3838c43e12f0c22ecf9a9a0c1deb1d30

SHA1
7b9d8e4a093672411f71f1cf6a7fe6803c61773c

SHA256
b980dfcce93e9140d8ce71151f2f385026b8cebc195b71055707e1468ad0131b

SHA512
f0f860a56500b449b29558dc6e8860ce4441cee2612cc22c7cb9aaf5106062e290e3b3313dd0eef55fe1678791992f0502dbda9d0350110b7f7591853445935c

Download Submit
C:\Users\Admin\AppData\Local\Temp\z5clatnf9g6d
MD5
317d593f910ed0b719655295500a581f

SHA1
a918c104f2c38d6192acc4ede5425faa1982aae7

SHA256
89dd35343acb959b643d53d0c54258dfe457d6724e7226abfad02fa8b2bf300f

SHA512
3818e2f971ed9bec278ec517d689b8fa224d763443556373cc503cf163d4823fbc5620db0c20efd2096e34c1936cddc8a7f1e504bf1c8c6753adf5f70f7be72f

Download Submit
\Users\Admin\AppData\Local\Temp\nsdF854.tmp\qdubg.dll
MD5
55a776d0472c31ed04059c11c38d7953

SHA1
ffaf336496a3f5333eb50347d22f58aa167f6dfe

SHA256
19ee07473845faf92de1dc004133078ed730a9ca95a577a0300e9b3a4384a448

SHA512
2e221116a744682de53ca10eb9aed09d703ffd19e8140936be98900293eb74fcbb295bc32817b712a7c1ad6d3ea946374b96e0ad758b7c88dbfa15e25a5eb071

Download Submit
\Users\Admin\AppData\Local\Temp\nsuECB1.tmp\qdubg.dll
MD5
55a776d0472c31ed04059c11c38d7953

SHA1
ffaf336496a3f5333eb50347d22f58aa167f6dfe

SHA256
19ee07473845faf92de1dc004133078ed730a9ca95a577a0300e9b3a4384a448

SHA512
2e221116a744682de53ca10eb9aed09d703ffd19e8140936be98900293eb74fcbb295bc32817b712a7c1ad6d3ea946374b96e0ad758b7c88dbfa15e25a5eb071

Download Submit
memory/320-55-0x00000000768A1000-0x00000000768A3000-memory.dmp

Filesize
8KB

Download
memory/624-66-0x0000000000080000-0x00000000000A9000-memory.dmp

Filesize
164KB

Download
memory/624-65-0x0000000000A00000-0x0000000000A09000-memory.dmp

Filesize
36KB

Download
memory/624-63-0x0000000000000000-mapping.dmp

Download
memory/624-67-0x0000000002190000-0x0000000002493000-memory.dmp

Filesize
3.0MB

Download
memory/624-68-0x0000000001EA0000-0x0000000001F30000-memory.dmp

Filesize
576KB

Download
memory/680-64-0x0000000000000000-mapping.dmp

Download
memory/1124-60-0x0000000000970000-0x0000000000C73000-memory.dmp

Filesize
3.0MB

Download
memory/1124-61-0x00000000003D0000-0x00000000003E1000-memory.dmp

Filesize
68KB

Download
memory/1124-58-0x000000000041D430-mapping.dmp

Download
memory/1124-57-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/1260-62-0x0000000006B10000-0x0000000006C85000-memory.dmp

Filesize
1.5MB

Download
memory/1260-69-0x00000000065B0000-0x0000000006684000-memory.dmp

Filesize
848KB

Download
memory/1792-78-0x000000000041D430-mapping.dmp

Download
memory/1792-80-0x0000000000860000-0x0000000000B63000-memory.dmp

Filesize
3.0MB

Download
memory/1872-71-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads