formbook | 5846e4c3d380772683c6398d37c33d7a3484762fccd6d8636b2b5d337637d00a

General

Target

STD 35 GA Plan_doc.exe
Size

867KB
MD5

d367a1f17ef481d21775f424c4beb7b7
SHA1

fc083e789e7f06627bf3465f74524a5758896f32
SHA256

5846e4c3d380772683c6398d37c33d7a3484762fccd6d8636b2b5d337637d00a
SHA512

2b9c821c00989e6cf9ee1279f8d34d8d02f3af5e07269d34e8e29c6a137e66522eff8211fb3c68bfafaef099aaec926a0a070bc940dd94f30657061b98541566

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 6 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/2000-65-0x000000000041F840-mapping.dmp	xloader
behavioral1/memory/2000-64-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral1/memory/2000-68-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral1/memory/2000-77-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral1/memory/680-80-0x00000000000D0000-0x00000000000FC000-memory.dmp	xloader
behavioral1/memory/680-84-0x00000000000D0000-0x00000000000FC000-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\JTH0NRUHVFE = "C:\\Program Files (x86)\\Znpmxv\\winmrkpgp.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_doc.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_doc.exe

Loads dropped DLL 1 IoCs

Processes:

cmmon32.exe

pid process

680 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
680	cmmon32.exe

Suspicious use of SetThreadContext 4 IoCs

Processes:

STD 35 GA Plan_doc.exeSTD 35 GA Plan_doc.execmmon32.exe

description	pid	process	target process
PID 560 set thread context of 2000	560	STD 35 GA Plan_doc.exe	STD 35 GA Plan_doc.exe
PID 2000 set thread context of 1428	2000	STD 35 GA Plan_doc.exe	Explorer.EXE
PID 2000 set thread context of 1428	2000	STD 35 GA Plan_doc.exe	Explorer.EXE
PID 680 set thread context of 1428	680	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)\Znpmxv\winmrkpgp.exe cmmon32.exe
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

1944 560 WerFault.exe STD 35 GA Plan_doc.exe

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

pid	pid_target	process	target process
1944	560	WerFault.exe	STD 35 GA Plan_doc.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 10 IoCs

Processes:

STD 35 GA Plan_doc.execmmon32.exe

pid	process
2000	STD 35 GA Plan_doc.exe
2000	STD 35 GA Plan_doc.exe
2000	STD 35 GA Plan_doc.exe
680	cmmon32.exe
680	cmmon32.exe
680	cmmon32.exe
680	cmmon32.exe
680	cmmon32.exe
680	cmmon32.exe
680	cmmon32.exe

Suspicious behavior: MapViewOfSection 8 IoCs

Processes:

STD 35 GA Plan_doc.execmmon32.exe

pid	process
2000	STD 35 GA Plan_doc.exe
2000	STD 35 GA Plan_doc.exe
2000	STD 35 GA Plan_doc.exe
2000	STD 35 GA Plan_doc.exe
680	cmmon32.exe
680	cmmon32.exe
680	cmmon32.exe
680	cmmon32.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

STD 35 GA Plan_doc.exeExplorer.EXEcmmon32.exe

description	pid	process
Token: SeDebugPrivilege	2000	STD 35 GA Plan_doc.exe
Token: SeShutdownPrivilege	1428	Explorer.EXE
Token: SeDebugPrivilege	680	cmmon32.exe

Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

Explorer.EXE

pid process

1428 Explorer.EXE
1428 Explorer.EXE
Suspicious use of SendNotifyMessage 2 IoCs

Processes:

Explorer.EXE

pid process

1428 Explorer.EXE
1428 Explorer.EXE

pid	process
1428	Explorer.EXE
1428	Explorer.EXE

pid	process
1428	Explorer.EXE
1428	Explorer.EXE

Suspicious use of WriteProcessMemory 28 IoCs

Processes:

STD 35 GA Plan_doc.exeExplorer.EXEcmmon32.exe

description	pid	process	target process
PID 560 wrote to memory of 2000	560	STD 35 GA Plan_doc.exe	STD 35 GA Plan_doc.exe
PID 560 wrote to memory of 2000	560	STD 35 GA Plan_doc.exe	STD 35 GA Plan_doc.exe
PID 560 wrote to memory of 2000	560	STD 35 GA Plan_doc.exe	STD 35 GA Plan_doc.exe
PID 560 wrote to memory of 2000	560	STD 35 GA Plan_doc.exe	STD 35 GA Plan_doc.exe
PID 560 wrote to memory of 2000	560	STD 35 GA Plan_doc.exe	STD 35 GA Plan_doc.exe
PID 560 wrote to memory of 2000	560	STD 35 GA Plan_doc.exe	STD 35 GA Plan_doc.exe
PID 560 wrote to memory of 2000	560	STD 35 GA Plan_doc.exe	STD 35 GA Plan_doc.exe
PID 560 wrote to memory of 1944	560	STD 35 GA Plan_doc.exe	WerFault.exe
PID 560 wrote to memory of 1944	560	STD 35 GA Plan_doc.exe	WerFault.exe
PID 560 wrote to memory of 1944	560	STD 35 GA Plan_doc.exe	WerFault.exe
PID 560 wrote to memory of 1944	560	STD 35 GA Plan_doc.exe	WerFault.exe
PID 1428 wrote to memory of 680	1428	Explorer.EXE	cmmon32.exe
PID 1428 wrote to memory of 680	1428	Explorer.EXE	cmmon32.exe
PID 1428 wrote to memory of 680	1428	Explorer.EXE	cmmon32.exe
PID 1428 wrote to memory of 680	1428	Explorer.EXE	cmmon32.exe
PID 680 wrote to memory of 1120	680	cmmon32.exe	cmd.exe
PID 680 wrote to memory of 1120	680	cmmon32.exe	cmd.exe
PID 680 wrote to memory of 1120	680	cmmon32.exe	cmd.exe
PID 680 wrote to memory of 1120	680	cmmon32.exe	cmd.exe
PID 680 wrote to memory of 1164	680	cmmon32.exe	Firefox.exe
PID 680 wrote to memory of 1164	680	cmmon32.exe	Firefox.exe
PID 680 wrote to memory of 1164	680	cmmon32.exe	Firefox.exe
PID 680 wrote to memory of 1164	680	cmmon32.exe	Firefox.exe
PID 680 wrote to memory of 1164	680	cmmon32.exe	Firefox.exe
PID 680 wrote to memory of 1536	680	cmmon32.exe	cmd.exe
PID 680 wrote to memory of 1536	680	cmmon32.exe	cmd.exe
PID 680 wrote to memory of 1536	680	cmmon32.exe	cmd.exe
PID 680 wrote to memory of 1536	680	cmmon32.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1428

C:\Users\Admin\AppData\Local\Temp\STD 35 GA Plan_doc.exe
"C:\Users\Admin\AppData\Local\Temp\STD 35 GA Plan_doc.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:560

C:\Users\Admin\AppData\Local\Temp\STD 35 GA Plan_doc.exe
"C:\Users\Admin\AppData\Local\Temp\STD 35 GA Plan_doc.exe"
3⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:2000

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 560 -s 896
3⤵
- Program crash
PID:1944

C:\Windows\SysWOW64\autochk.exe
"C:\Windows\SysWOW64\autochk.exe"
2⤵
PID:1716

C:\Windows\SysWOW64\autochk.exe
"C:\Windows\SysWOW64\autochk.exe"
2⤵
PID:1768

C:\Windows\SysWOW64\autochk.exe
"C:\Windows\SysWOW64\autochk.exe"
2⤵
PID:888

C:\Windows\SysWOW64\autochk.exe
"C:\Windows\SysWOW64\autochk.exe"
2⤵
PID:616

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:680

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\STD 35 GA Plan_doc.exe"
3⤵
PID:1120

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:1164

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:1536

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

Replay Monitor

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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
635KB

MD5
ee68b052a08fec0f574f2dae2003df27

SHA1
4fe217c85e91d3ae7c46acbc03b9ca6565a29a92

SHA256
cf5301c28275b1f04d5ebaecc7fc4ebd9ebc970e1c2c9512f5380e263bf9ddfd

SHA512
d39c9560380c8f8c0a8e15dd3c577bad6d1ffc479afb9dc81e67bc2510f61e8c9fca723c2b931065738b1f554bab73ff934e65fcf4334df1e1539ebd566dfab2

Download Submit
memory/560-72-0x0000000000935000-0x0000000000946000-memory.dmp

Filesize
68KB

Download
memory/560-55-0x0000000075271000-0x0000000075273000-memory.dmp

Filesize
8KB

Download
memory/560-56-0x0000000000AB0000-0x0000000000ACA000-memory.dmp

Filesize
104KB

Download
memory/560-57-0x0000000000E60000-0x0000000000E6E000-memory.dmp

Filesize
56KB

Download
memory/560-58-0x0000000005E90000-0x0000000005F0A000-memory.dmp

Filesize
488KB

Download
memory/560-59-0x0000000000935000-0x0000000000946000-memory.dmp

Filesize
68KB

Download
memory/560-60-0x0000000004A60000-0x0000000004A92000-memory.dmp

Filesize
200KB

Download
memory/560-54-0x0000000000E70000-0x0000000000F4E000-memory.dmp

Filesize
888KB

Download
memory/680-81-0x0000000002110000-0x0000000002413000-memory.dmp

Filesize
3.0MB

Download
memory/680-76-0x0000000000000000-mapping.dmp

Download
memory/680-84-0x00000000000D0000-0x00000000000FC000-memory.dmp

Filesize
176KB

Download
memory/680-82-0x0000000000840000-0x00000000008D0000-memory.dmp

Filesize
576KB

Download
memory/680-80-0x00000000000D0000-0x00000000000FC000-memory.dmp

Filesize
176KB

Download
memory/680-79-0x0000000000D00000-0x0000000000D0D000-memory.dmp

Filesize
52KB

Download
memory/1120-78-0x0000000000000000-mapping.dmp

Download
memory/1428-83-0x0000000007240000-0x00000000073C0000-memory.dmp

Filesize
1.5MB

Download
memory/1428-75-0x0000000007100000-0x000000000723B000-memory.dmp

Filesize
1.2MB

Download
memory/1428-86-0x0000000007240000-0x00000000073C0000-memory.dmp

Filesize
1.5MB

Download
memory/1428-71-0x00000000067A0000-0x00000000068E1000-memory.dmp

Filesize
1.3MB

Download
memory/1536-88-0x0000000000000000-mapping.dmp

Download
memory/1944-66-0x0000000000000000-mapping.dmp

Download
memory/2000-65-0x000000000041F840-mapping.dmp

Download
memory/2000-70-0x0000000000290000-0x00000000002A1000-memory.dmp

Filesize
68KB

Download
memory/2000-69-0x00000000008D0000-0x0000000000BD3000-memory.dmp

Filesize
3.0MB

Download
memory/2000-64-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/2000-68-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/2000-74-0x00000000002E0000-0x00000000002F1000-memory.dmp

Filesize
68KB

Download
memory/2000-62-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/2000-77-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/2000-61-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

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Downloads