formbook | 175cb0ef969196bf7f303ea574bf8bfec879e6fbdf29cdb62cf325c1788e8866

General

Target

tmp.exe
Size

249KB
MD5

43d4d189e3a454af9ec3a8eb52950229
SHA1

0318519523ceb8e1336519f864fbaa4836c7bb0b
SHA256

175cb0ef969196bf7f303ea574bf8bfec879e6fbdf29cdb62cf325c1788e8866
SHA512

efd2542533a9351fbde8c662437a9cb9e6fa42dbc96442e3d498056a470e6f40797f30d44a3f08b363839cb623a8d32d7294ab80bb16619179281a04d4da4e64
SSDEEP

6144:/Ya60JwnxUpL0uzKDDT8ivn9q4p2lEtW0hlYScRcG:/YqYOpL0Oq4ivnE4s+96ScRcG

Score

10^/10

formbook xloader u8ow loader persistence rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Campaign

u8ow

Decoy

uzhDDUNgg10rOh8rkUMGYiLuNnRWl9gwMQ==

bfkA4IUaSgYi7IA=

ezX5yHeR21O3h2RCgQ==

x3E4ntHeLMGQm0kdTi6PJtjOVS6Em8UaKA==

xJuAYwcZLAfqrVazWjvkirgFxDSf

qrGugLdannLYegX5dCtFMA==

i61nMddueAYi7IA=

RoNMKNhtdDWpeiYoaB37TPiHTLo=

RFj3UHHrDtAktSZhYku36opnsaMbNA==

lx0g+6RPl4jwwNPRPuTD

MyEQ4oGk6vXrMM4V

0IVWH0rfKe1J4nn6J9XB

SYVlN3Zrnq2OaWpDiQ==

fNa0jy3P8KQK25rpmwqd0t8=

UZuSZpW+9ffX9KXzmgqd0t8=

Vxf85YCWvYNZjkcDdCtFMA==

0gG1EzLP7/DrMM4V

WExRGVAEE6YS5tJkTxMhR636+A==

6Tv7U4QdURt1KUI+gw==

ooR7RXgsXPtaEutnaQ3efjIXmfJePavzIA==

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 3 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/108-64-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral1/memory/668-71-0x00000000000D0000-0x00000000000FC000-memory.dmp	xloader
behavioral1/memory/668-76-0x00000000000D0000-0x00000000000FC000-memory.dmp	xloader

Blocklisted process makes network request 3 IoCs

Processes:

rundll32.exe

flow pid process

12 668 rundll32.exe
23 668 rundll32.exe
32 668 rundll32.exe
Executes dropped EXE 2 IoCs

Processes:

jxpnas.exejxpnas.exe

pid process

1444 jxpnas.exe
108 jxpnas.exe
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:

jxpnas.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Control Panel\International\Geo\Nation jxpnas.exe
Loads dropped DLL 2 IoCs

Processes:

tmp.exejxpnas.exe

pid process

1584 tmp.exe
1444 jxpnas.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

flow	pid	process
12	668	rundll32.exe
23	668	rundll32.exe
32	668	rundll32.exe

pid	process
1444	jxpnas.exe
108	jxpnas.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Control Panel\International\Geo\Nation	jxpnas.exe

pid	process
1584	tmp.exe
1444	jxpnas.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

rundll32.exe

description	ioc	process
Key created	\Registry\Machine\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\YZZ8FTBPMR = "C:\\Program Files (x86)\\O7nmxef\\vgacfd.exe"	rundll32.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

jxpnas.exejxpnas.exerundll32.exe

description	pid	process	target process
PID 1444 set thread context of 108	1444	jxpnas.exe	jxpnas.exe
PID 108 set thread context of 1260	108	jxpnas.exe	Explorer.EXE
PID 668 set thread context of 1260	668	rundll32.exe	Explorer.EXE

Drops file in Program Files directory 1 IoCs

Processes:

rundll32.exe

description ioc process

File opened for modification C:\Program Files (x86)\O7nmxef\vgacfd.exe rundll32.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

description	ioc	process
File opened for modification	C:\Program Files (x86)\O7nmxef\vgacfd.exe	rundll32.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

rundll32.exe

description	ioc	process
Key created	\Registry\User\S-1-5-21-1214520366-621468234-4062160515-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	rundll32.exe

Suspicious behavior: EnumeratesProcesses 26 IoCs

Processes:

jxpnas.exerundll32.exe

pid	process
108	jxpnas.exe
108	jxpnas.exe
668	rundll32.exe
668	rundll32.exe
668	rundll32.exe
668	rundll32.exe
668	rundll32.exe
668	rundll32.exe
668	rundll32.exe
668	rundll32.exe
668	rundll32.exe
668	rundll32.exe
668	rundll32.exe
668	rundll32.exe
668	rundll32.exe
668	rundll32.exe
668	rundll32.exe
668	rundll32.exe
668	rundll32.exe
668	rundll32.exe
668	rundll32.exe
668	rundll32.exe
668	rundll32.exe
668	rundll32.exe
668	rundll32.exe
668	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

1260 Explorer.EXE
Suspicious behavior: MapViewOfSection 8 IoCs

Processes:

jxpnas.exejxpnas.exerundll32.exe

pid process

1444 jxpnas.exe
108 jxpnas.exe
108 jxpnas.exe
108 jxpnas.exe
668 rundll32.exe
668 rundll32.exe
668 rundll32.exe
668 rundll32.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

jxpnas.exerundll32.exe

description pid process

Token: SeDebugPrivilege 108 jxpnas.exe
Token: SeDebugPrivilege 668 rundll32.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

pid	process
1444	jxpnas.exe
108	jxpnas.exe
108	jxpnas.exe
108	jxpnas.exe
668	rundll32.exe
668	rundll32.exe
668	rundll32.exe
668	rundll32.exe

description	pid	process
Token: SeDebugPrivilege	108	jxpnas.exe
Token: SeDebugPrivilege	668	rundll32.exe

pid	process
1260	Explorer.EXE
1260	Explorer.EXE

pid	process
1260	Explorer.EXE
1260	Explorer.EXE

Suspicious use of WriteProcessMemory 25 IoCs

Processes:

tmp.exejxpnas.exeExplorer.EXErundll32.exe

description	pid	process	target process
PID 1584 wrote to memory of 1444	1584	tmp.exe	jxpnas.exe
PID 1584 wrote to memory of 1444	1584	tmp.exe	jxpnas.exe
PID 1584 wrote to memory of 1444	1584	tmp.exe	jxpnas.exe
PID 1584 wrote to memory of 1444	1584	tmp.exe	jxpnas.exe
PID 1444 wrote to memory of 108	1444	jxpnas.exe	jxpnas.exe
PID 1444 wrote to memory of 108	1444	jxpnas.exe	jxpnas.exe
PID 1444 wrote to memory of 108	1444	jxpnas.exe	jxpnas.exe
PID 1444 wrote to memory of 108	1444	jxpnas.exe	jxpnas.exe
PID 1444 wrote to memory of 108	1444	jxpnas.exe	jxpnas.exe
PID 1260 wrote to memory of 668	1260	Explorer.EXE	rundll32.exe
PID 1260 wrote to memory of 668	1260	Explorer.EXE	rundll32.exe
PID 1260 wrote to memory of 668	1260	Explorer.EXE	rundll32.exe
PID 1260 wrote to memory of 668	1260	Explorer.EXE	rundll32.exe
PID 1260 wrote to memory of 668	1260	Explorer.EXE	rundll32.exe
PID 1260 wrote to memory of 668	1260	Explorer.EXE	rundll32.exe
PID 1260 wrote to memory of 668	1260	Explorer.EXE	rundll32.exe
PID 668 wrote to memory of 1448	668	rundll32.exe	cmd.exe
PID 668 wrote to memory of 1448	668	rundll32.exe	cmd.exe
PID 668 wrote to memory of 1448	668	rundll32.exe	cmd.exe
PID 668 wrote to memory of 1448	668	rundll32.exe	cmd.exe
PID 668 wrote to memory of 848	668	rundll32.exe	Firefox.exe
PID 668 wrote to memory of 848	668	rundll32.exe	Firefox.exe
PID 668 wrote to memory of 848	668	rundll32.exe	Firefox.exe
PID 668 wrote to memory of 848	668	rundll32.exe	Firefox.exe
PID 668 wrote to memory of 848	668	rundll32.exe	Firefox.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1260

C:\Users\Admin\AppData\Local\Temp\tmp.exe
"C:\Users\Admin\AppData\Local\Temp\tmp.exe"
2⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1584

C:\Users\Admin\AppData\Local\Temp\jxpnas.exe
"C:\Users\Admin\AppData\Local\Temp\jxpnas.exe" C:\Users\Admin\AppData\Local\Temp\ahvzwi.cq
3⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:1444

C:\Users\Admin\AppData\Local\Temp\jxpnas.exe
"C:\Users\Admin\AppData\Local\Temp\jxpnas.exe"
4⤵
- Executes dropped EXE
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:108

C:\Windows\SysWOW64\rundll32.exe
"C:\Windows\SysWOW64\rundll32.exe"
2⤵
- Blocklisted process makes network request
- Adds 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:668

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\jxpnas.exe"
3⤵
PID:1448

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:848

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

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\ahvzwi.cq
Filesize
5KB

MD5
5990edca1e90a413ff69195bdbdc3be6

SHA1
5837a9f20a79279395859e1f2e30658c864ed069

SHA256
019d7db60fcdfcf3dd5ea153ebffaa61040d3193dcb2ad758532eda81258b211

SHA512
16a4accda7b7f566fe034e5b32984398e7c4ed65e78c9bf2bcb32a99afee9e70f371271317afb46450293bef3e59673df7c0ee7971ef867723c2c46618bd1564

Download Submit
C:\Users\Admin\AppData\Local\Temp\jxpnas.exe
Filesize
50KB

MD5
fc110da3fe9e6fe3f5ff60f7259d2d7e

SHA1
ba8684a068fe6fb10d231ad01b68f498fb074131

SHA256
02c0321429610986ad8850ffc7ec526bd9c2a344e52f52d7345da5fa0e545e84

SHA512
32511fa75ed00fc24a00289036efc479269b1a2fca3d7192bfc4d9db2f8662a50b12c84fb3febd42a01851486fc55d838298bf64c9e2b6d8ad0830fdf9ce1993

Download Submit
C:\Users\Admin\AppData\Local\Temp\jxpnas.exe
Filesize
50KB

MD5
fc110da3fe9e6fe3f5ff60f7259d2d7e

SHA1
ba8684a068fe6fb10d231ad01b68f498fb074131

SHA256
02c0321429610986ad8850ffc7ec526bd9c2a344e52f52d7345da5fa0e545e84

SHA512
32511fa75ed00fc24a00289036efc479269b1a2fca3d7192bfc4d9db2f8662a50b12c84fb3febd42a01851486fc55d838298bf64c9e2b6d8ad0830fdf9ce1993

Download Submit
C:\Users\Admin\AppData\Local\Temp\jxpnas.exe
Filesize
50KB

MD5
fc110da3fe9e6fe3f5ff60f7259d2d7e

SHA1
ba8684a068fe6fb10d231ad01b68f498fb074131

SHA256
02c0321429610986ad8850ffc7ec526bd9c2a344e52f52d7345da5fa0e545e84

SHA512
32511fa75ed00fc24a00289036efc479269b1a2fca3d7192bfc4d9db2f8662a50b12c84fb3febd42a01851486fc55d838298bf64c9e2b6d8ad0830fdf9ce1993

Download Submit
C:\Users\Admin\AppData\Local\Temp\ywhrwirdt.xk
Filesize
196KB

MD5
c8bba834e9fe47e57f8f77549419ee0e

SHA1
407486ea0d13a952df8c7c7bc4126d0b2299b503

SHA256
f83109aadf0a18f3a06866956cb870285b92db2c06432afaa629450ddc0c88eb

SHA512
6a8e81d1b1dc83eedbc7ef48825e9c105b850bb6f4bb404fb01d27dcfb54d31dfb629ab017fd5499883a526ded38e73d4dddd7755ace204eed8999370ab04689

Download Submit
\Users\Admin\AppData\Local\Temp\jxpnas.exe
Filesize
50KB

MD5
fc110da3fe9e6fe3f5ff60f7259d2d7e

SHA1
ba8684a068fe6fb10d231ad01b68f498fb074131

SHA256
02c0321429610986ad8850ffc7ec526bd9c2a344e52f52d7345da5fa0e545e84

SHA512
32511fa75ed00fc24a00289036efc479269b1a2fca3d7192bfc4d9db2f8662a50b12c84fb3febd42a01851486fc55d838298bf64c9e2b6d8ad0830fdf9ce1993

Download Submit
\Users\Admin\AppData\Local\Temp\jxpnas.exe
Filesize
50KB

MD5
fc110da3fe9e6fe3f5ff60f7259d2d7e

SHA1
ba8684a068fe6fb10d231ad01b68f498fb074131

SHA256
02c0321429610986ad8850ffc7ec526bd9c2a344e52f52d7345da5fa0e545e84

SHA512
32511fa75ed00fc24a00289036efc479269b1a2fca3d7192bfc4d9db2f8662a50b12c84fb3febd42a01851486fc55d838298bf64c9e2b6d8ad0830fdf9ce1993

Download Submit
memory/108-64-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/108-65-0x0000000000820000-0x0000000000B23000-memory.dmp

Filesize
3.0MB

Download
memory/108-62-0x0000000000420000-mapping.dmp

Download
memory/108-66-0x00000000002C0000-0x00000000002D1000-memory.dmp

Filesize
68KB

Download
memory/668-68-0x0000000000000000-mapping.dmp

Download
memory/668-70-0x0000000000C00000-0x0000000000C0E000-memory.dmp

Filesize
56KB

Download
memory/668-71-0x00000000000D0000-0x00000000000FC000-memory.dmp

Filesize
176KB

Download
memory/668-73-0x00000000021A0000-0x00000000024A3000-memory.dmp

Filesize
3.0MB

Download
memory/668-74-0x00000000007A0000-0x0000000000830000-memory.dmp

Filesize
576KB

Download
memory/668-76-0x00000000000D0000-0x00000000000FC000-memory.dmp

Filesize
176KB

Download
memory/1260-67-0x0000000006850000-0x000000000697C000-memory.dmp

Filesize
1.2MB

Download
memory/1260-75-0x0000000004F10000-0x0000000004FC6000-memory.dmp

Filesize
728KB

Download
memory/1260-77-0x0000000004F10000-0x0000000004FC6000-memory.dmp

Filesize
728KB

Download
memory/1444-56-0x0000000000000000-mapping.dmp

Download
memory/1448-72-0x0000000000000000-mapping.dmp

Download
memory/1584-54-0x0000000075491000-0x0000000075493000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads