formbook | 44079f7afc8f2b9900564b14b8e3e9e5b8de7ad0b4a1d514e5ff644def494d4e

General

Target

STD 35 GA Plan_PDF.exe
Size

662KB
MD5

1697d5a8c04a7220e7bd25e3a7b4ada5
SHA1

5b71b005e84f5dcbca487c24f7662303d0dd656b
SHA256

44079f7afc8f2b9900564b14b8e3e9e5b8de7ad0b4a1d514e5ff644def494d4e
SHA512

3c68a2b785108b4ef26e122989b28f8126578815c8de0d8f80cdc251d3d86a31059b4aecd379fd6bde8aafcbc58bc2523e7dbaada706c3b3921d4ff2b192ae1f

Score

10^/10

formbook xloader iewb loader persistence rat spyware stealer suricata trojan

Malware Config

Extracted

Family

xloader

Version

2.9

Campaign

iewb

Decoy

n8FLlgIlb1rSEg5hJ9xMbw4hcmR38Q==

5vIAIY+pt81OtWs+FdIEdk7Y

LHIKc+oWGIQUUlfAAtEEdk7Y

ePM/cX2jvHrS

5hvPEw22+fdvmJz3C8FIVq0=

mb9EeX2jvHrS

Dx2zIYNvfjo8VUo5

6jVPnyJekv2RAc4gLKNwEqQ=

KWatHyjdE5Gj1Ng=

t9lk70gzUAZty4qjbVjF

6eUBeFPzKBWT125BFNIEdk7Y

dZUXOIyqTJGj1Ng=

iL3TVh2Jl5QVStnzxcAhIL8=

J1prtyklUfZGR/xDD71IbkWRd2yx

s9FgCOBRW9bU0Y6jbVjF

RYCbQDzcFBhcylgu

Fl0BV/8RJm6F9QRg8LXXTLo=

0dhumHzrCCZ3wdQg7nFF1AlL6Tk=

xvL+iL6wwX+/wH9K4lbZ/A==

N0lVceIFD5Gj1Ng=

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

Xloader Payload 5 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/1260-63-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral1/memory/1260-64-0x000000000041F840-mapping.dmp	xloader
behavioral1/memory/1260-66-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral1/memory/1160-72-0x0000000000080000-0x00000000000AC000-memory.dmp	xloader
behavioral1/memory/1160-77-0x0000000000080000-0x00000000000AC000-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:

cmmon32.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	cmmon32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\YLUL_RWH7VZ = "C:\\Program Files (x86)\\Bmjo\\vgaaz7tdx.exe"	cmmon32.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:

STD 35 GA Plan_PDF.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Control Panel\International\Geo\Nation	STD 35 GA Plan_PDF.exe

Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

896 cmd.exe
Loads dropped DLL 1 IoCs

Processes:

cmmon32.exe

pid process

1160 cmmon32.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
896	cmd.exe

pid	process
1160	cmmon32.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

STD 35 GA Plan_PDF.exeSTD 35 GA Plan_PDF.execmmon32.exe

description	pid	process	target process
PID 2040 set thread context of 1260	2040	STD 35 GA Plan_PDF.exe	STD 35 GA Plan_PDF.exe
PID 1260 set thread context of 1416	1260	STD 35 GA Plan_PDF.exe	Explorer.EXE
PID 1160 set thread context of 1416	1160	cmmon32.exe	Explorer.EXE

Drops file in Program Files directory 1 IoCs

Processes:

cmmon32.exe

description ioc process

File opened for modification C:\Program Files (x86)\Bmjo\vgaaz7tdx.exe cmmon32.exe

description	ioc	process
File opened for modification	C:\Program Files (x86)\Bmjo\vgaaz7tdx.exe	cmmon32.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

cmmon32.exe

description	ioc	process
Key created	\Registry\User\S-1-5-21-1819626980-2277161760-1023733287-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	cmmon32.exe

Suspicious behavior: EnumeratesProcesses 13 IoCs

Processes:

STD 35 GA Plan_PDF.execmmon32.exe

pid	process
1260	STD 35 GA Plan_PDF.exe
1260	STD 35 GA Plan_PDF.exe
1160	cmmon32.exe
1160	cmmon32.exe
1160	cmmon32.exe
1160	cmmon32.exe
1160	cmmon32.exe
1160	cmmon32.exe
1160	cmmon32.exe
1160	cmmon32.exe
1160	cmmon32.exe
1160	cmmon32.exe
1160	cmmon32.exe

Suspicious behavior: MapViewOfSection 7 IoCs

Processes:

STD 35 GA Plan_PDF.execmmon32.exe

pid process

1260 STD 35 GA Plan_PDF.exe
1260 STD 35 GA Plan_PDF.exe
1260 STD 35 GA Plan_PDF.exe
1160 cmmon32.exe
1160 cmmon32.exe
1160 cmmon32.exe
1160 cmmon32.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

STD 35 GA Plan_PDF.execmmon32.exe

description pid process

Token: SeDebugPrivilege 1260 STD 35 GA Plan_PDF.exe
Token: SeDebugPrivilege 1160 cmmon32.exe
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

Explorer.EXE

pid process

1416 Explorer.EXE
1416 Explorer.EXE
Suspicious use of SendNotifyMessage 2 IoCs

Processes:

Explorer.EXE

pid process

1416 Explorer.EXE
1416 Explorer.EXE

description	pid	process
Token: SeDebugPrivilege	1260	STD 35 GA Plan_PDF.exe
Token: SeDebugPrivilege	1160	cmmon32.exe

pid	process
1416	Explorer.EXE
1416	Explorer.EXE

pid	process
1416	Explorer.EXE
1416	Explorer.EXE

Suspicious use of WriteProcessMemory 24 IoCs

Processes:

STD 35 GA Plan_PDF.exeExplorer.EXEcmmon32.exe

description	pid	process	target process
PID 2040 wrote to memory of 1260	2040	STD 35 GA Plan_PDF.exe	STD 35 GA Plan_PDF.exe
PID 2040 wrote to memory of 1260	2040	STD 35 GA Plan_PDF.exe	STD 35 GA Plan_PDF.exe
PID 2040 wrote to memory of 1260	2040	STD 35 GA Plan_PDF.exe	STD 35 GA Plan_PDF.exe
PID 2040 wrote to memory of 1260	2040	STD 35 GA Plan_PDF.exe	STD 35 GA Plan_PDF.exe
PID 2040 wrote to memory of 1260	2040	STD 35 GA Plan_PDF.exe	STD 35 GA Plan_PDF.exe
PID 2040 wrote to memory of 1260	2040	STD 35 GA Plan_PDF.exe	STD 35 GA Plan_PDF.exe
PID 2040 wrote to memory of 1260	2040	STD 35 GA Plan_PDF.exe	STD 35 GA Plan_PDF.exe
PID 1416 wrote to memory of 1160	1416	Explorer.EXE	cmmon32.exe
PID 1416 wrote to memory of 1160	1416	Explorer.EXE	cmmon32.exe
PID 1416 wrote to memory of 1160	1416	Explorer.EXE	cmmon32.exe
PID 1416 wrote to memory of 1160	1416	Explorer.EXE	cmmon32.exe
PID 1160 wrote to memory of 896	1160	cmmon32.exe	cmd.exe
PID 1160 wrote to memory of 896	1160	cmmon32.exe	cmd.exe
PID 1160 wrote to memory of 896	1160	cmmon32.exe	cmd.exe
PID 1160 wrote to memory of 896	1160	cmmon32.exe	cmd.exe
PID 1160 wrote to memory of 1928	1160	cmmon32.exe	Firefox.exe
PID 1160 wrote to memory of 1928	1160	cmmon32.exe	Firefox.exe
PID 1160 wrote to memory of 1928	1160	cmmon32.exe	Firefox.exe
PID 1160 wrote to memory of 1928	1160	cmmon32.exe	Firefox.exe
PID 1160 wrote to memory of 1928	1160	cmmon32.exe	Firefox.exe
PID 1160 wrote to memory of 1672	1160	cmmon32.exe	cmd.exe
PID 1160 wrote to memory of 1672	1160	cmmon32.exe	cmd.exe
PID 1160 wrote to memory of 1672	1160	cmmon32.exe	cmd.exe
PID 1160 wrote to memory of 1672	1160	cmmon32.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1416

C:\Users\Admin\AppData\Local\Temp\STD 35 GA Plan_PDF.exe
"C:\Users\Admin\AppData\Local\Temp\STD 35 GA Plan_PDF.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2040

C:\Users\Admin\AppData\Local\Temp\STD 35 GA Plan_PDF.exe
"C:\Users\Admin\AppData\Local\Temp\STD 35 GA Plan_PDF.exe"
3⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:1260

C:\Windows\SysWOW64\cmmon32.exe
"C:\Windows\SysWOW64\cmmon32.exe"
2⤵
- Adds policy Run key to start application
- Loads dropped DLL
- 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:1160

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\STD 35 GA Plan_PDF.exe"
3⤵
- Deletes itself
PID:896

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:1928

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:1672

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

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
\Users\Admin\AppData\Local\Temp\sqlite3.dll
Filesize
628KB

MD5
e3b107beaf9eaab93d09738d7dcb0946

SHA1
e625eac28fad8d1ed8544a35b9e54e596313b266

SHA256
8dccdffda1babc90e9917e7927c7387e4ca8e556f0bb94aace207c998a289223

SHA512
c08038d6c7c527ae1e13540358c2a117e5aa6275643b2d88e19e1dc7dd0aa4191c74598e385c57d854866c2de31688fb3640bc7e3a2303b8291154375398305a

Download Submit
memory/896-73-0x0000000000000000-mapping.dmp

Download
memory/1160-70-0x0000000000000000-mapping.dmp

Download
memory/1160-77-0x0000000000080000-0x00000000000AC000-memory.dmp

Filesize
176KB

Download
memory/1160-75-0x0000000001D60000-0x0000000001DF0000-memory.dmp

Filesize
576KB

Download
memory/1160-74-0x0000000001F40000-0x0000000002243000-memory.dmp

Filesize
3.0MB

Download
memory/1160-72-0x0000000000080000-0x00000000000AC000-memory.dmp

Filesize
176KB

Download
memory/1160-71-0x0000000000440000-0x000000000044D000-memory.dmp

Filesize
52KB

Download
memory/1260-60-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1260-61-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1260-67-0x0000000000A60000-0x0000000000D63000-memory.dmp

Filesize
3.0MB

Download
memory/1260-68-0x0000000000280000-0x0000000000291000-memory.dmp

Filesize
68KB

Download
memory/1260-66-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1260-64-0x000000000041F840-mapping.dmp

Download
memory/1260-63-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1416-79-0x0000000006CE0000-0x0000000006D90000-memory.dmp

Filesize
704KB

Download
memory/1416-76-0x0000000006CE0000-0x0000000006D90000-memory.dmp

Filesize
704KB

Download
memory/1416-69-0x0000000006FA0000-0x0000000007119000-memory.dmp

Filesize
1.5MB

Download
memory/1672-81-0x0000000000000000-mapping.dmp

Download
memory/2040-54-0x00000000009B0000-0x0000000000A5C000-memory.dmp

Filesize
688KB

Download
memory/2040-59-0x0000000004FC0000-0x0000000004FF2000-memory.dmp

Filesize
200KB

Download
memory/2040-58-0x0000000005270000-0x00000000052EA000-memory.dmp

Filesize
488KB

Download
memory/2040-57-0x0000000000790000-0x000000000079E000-memory.dmp

Filesize
56KB

Download
memory/2040-56-0x00000000003E0000-0x0000000000400000-memory.dmp

Filesize
128KB

Download
memory/2040-55-0x0000000075FE1000-0x0000000075FE3000-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