formbook | 1868d031ba42f5f9b2f176f218647509ebcbf1171ed0da75a594a26744d03d9a

Analysis

max time kernel
149s
max time network
152s
platform
windows7_x64
resource
win7-20220414-en
submitted
27-05-2022 11:30

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General

Target

Swift Copy05262020.pdf.exe
Size

342KB
MD5

8380afc6e34fe722c9e16f6ee797bab8
SHA1

5dd6c2103053372286d09b6fdb374c1d43e23a4f
SHA256

1868d031ba42f5f9b2f176f218647509ebcbf1171ed0da75a594a26744d03d9a
SHA512

e6097dc8b5a633e0d9d8798ea1366338b7a1d64f822907c4ce5b5f9e6029438c578cb559731cdef87ad54a09f6890d76df73f2f1745248a05e18879cf782c39c

Score

10^/10

formbook xloader ygkp loader persistence rat spyware stealer suricata trojan

Malware Config

Extracted

Family

xloader

Version

2.6

Campaign

ygkp

Decoy

cbdlively.com

1nfo-post.com

janejohnsonlmt.com

autotradecryptoswithjack.com

mustang-international.net

dreamthorp.com

alexandratanner.net

exilings.com

gzjdgjg.com

51minzhu.com

wgv.info

raymondjamesconsult.com

omariblair.com

vaalerahealth.com

outdoorvoiceshop.com

spbo.info

blasiandating.online

c01-cdn48-oxble.xyz

mrmycology.com

installturbooax.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

Xloader Payload 4 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/832-63-0x0000000000400000-0x000000000042B000-memory.dmp	xloader
behavioral1/memory/832-64-0x000000000041F350-mapping.dmp	xloader
behavioral1/memory/832-67-0x0000000000400000-0x000000000042B000-memory.dmp	xloader
behavioral1/memory/1988-73-0x0000000000070000-0x000000000009B000-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:

cscript.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	cscript.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\MJOXNFP0V8 = "C:\\Program Files (x86)\\Otrzx0nnh\\ThumbCacherfc8.exe"	cscript.exe

Executes dropped EXE 3 IoCs

Processes:

rtjwekgkjm.exertjwekgkjm.exeThumbCacherfc8.exe

pid process

1984 rtjwekgkjm.exe
832 rtjwekgkjm.exe
616 ThumbCacherfc8.exe
Loads dropped DLL 6 IoCs

Processes:

Swift Copy05262020.pdf.exertjwekgkjm.exeWerFault.exe

pid process

1100 Swift Copy05262020.pdf.exe
1984 rtjwekgkjm.exe
1692 WerFault.exe
1692 WerFault.exe
1692 WerFault.exe
1692 WerFault.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
1984	rtjwekgkjm.exe
832	rtjwekgkjm.exe
616	ThumbCacherfc8.exe

pid	process
1100	Swift Copy05262020.pdf.exe
1984	rtjwekgkjm.exe
1692	WerFault.exe
1692	WerFault.exe
1692	WerFault.exe
1692	WerFault.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

rtjwekgkjm.exertjwekgkjm.execscript.exe

description	pid	process	target process
PID 1984 set thread context of 832	1984	rtjwekgkjm.exe	rtjwekgkjm.exe
PID 832 set thread context of 1272	832	rtjwekgkjm.exe	Explorer.EXE
PID 1988 set thread context of 1272	1988	cscript.exe	Explorer.EXE

Drops file in Program Files directory 2 IoCs

Processes:

cscript.exeExplorer.EXE

description	ioc	process
File opened for modification	C:\Program Files (x86)\Otrzx0nnh\ThumbCacherfc8.exe	cscript.exe
File created	C:\Program Files (x86)\Otrzx0nnh\ThumbCacherfc8.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
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

1692 616 WerFault.exe ThumbCacherfc8.exe

pid	pid_target	process	target process
1692	616	WerFault.exe	ThumbCacherfc8.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

cscript.exe

description	ioc	process
Key created	\Registry\User\S-1-5-21-2277218442-1199762539-2004043321-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	cscript.exe

Suspicious behavior: EnumeratesProcesses 26 IoCs

Processes:

rtjwekgkjm.execscript.exe

pid	process
832	rtjwekgkjm.exe
832	rtjwekgkjm.exe
1988	cscript.exe
1988	cscript.exe
1988	cscript.exe
1988	cscript.exe
1988	cscript.exe
1988	cscript.exe
1988	cscript.exe
1988	cscript.exe
1988	cscript.exe
1988	cscript.exe
1988	cscript.exe
1988	cscript.exe
1988	cscript.exe
1988	cscript.exe
1988	cscript.exe
1988	cscript.exe
1988	cscript.exe
1988	cscript.exe
1988	cscript.exe
1988	cscript.exe
1988	cscript.exe
1988	cscript.exe
1988	cscript.exe
1988	cscript.exe

Suspicious behavior: MapViewOfSection 7 IoCs

Processes:

rtjwekgkjm.execscript.exe

pid process

832 rtjwekgkjm.exe
832 rtjwekgkjm.exe
832 rtjwekgkjm.exe
1988 cscript.exe
1988 cscript.exe
1988 cscript.exe
1988 cscript.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

rtjwekgkjm.execscript.exeExplorer.EXE

description pid process

Token: SeDebugPrivilege 832 rtjwekgkjm.exe
Token: SeDebugPrivilege 1988 cscript.exe
Token: SeShutdownPrivilege 1272 Explorer.EXE
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

Explorer.EXE

pid process

1272 Explorer.EXE
1272 Explorer.EXE
Suspicious use of SendNotifyMessage 2 IoCs

Processes:

Explorer.EXE

pid process

1272 Explorer.EXE
1272 Explorer.EXE

description	pid	process
Token: SeDebugPrivilege	832	rtjwekgkjm.exe
Token: SeDebugPrivilege	1988	cscript.exe
Token: SeShutdownPrivilege	1272	Explorer.EXE

pid	process
1272	Explorer.EXE
1272	Explorer.EXE

pid	process
1272	Explorer.EXE
1272	Explorer.EXE

Suspicious use of WriteProcessMemory 32 IoCs

Processes:

Swift Copy05262020.pdf.exertjwekgkjm.exeExplorer.EXEcscript.exeThumbCacherfc8.exe

description	pid	process	target process
PID 1100 wrote to memory of 1984	1100	Swift Copy05262020.pdf.exe	rtjwekgkjm.exe
PID 1100 wrote to memory of 1984	1100	Swift Copy05262020.pdf.exe	rtjwekgkjm.exe
PID 1100 wrote to memory of 1984	1100	Swift Copy05262020.pdf.exe	rtjwekgkjm.exe
PID 1100 wrote to memory of 1984	1100	Swift Copy05262020.pdf.exe	rtjwekgkjm.exe
PID 1984 wrote to memory of 832	1984	rtjwekgkjm.exe	rtjwekgkjm.exe
PID 1984 wrote to memory of 832	1984	rtjwekgkjm.exe	rtjwekgkjm.exe
PID 1984 wrote to memory of 832	1984	rtjwekgkjm.exe	rtjwekgkjm.exe
PID 1984 wrote to memory of 832	1984	rtjwekgkjm.exe	rtjwekgkjm.exe
PID 1984 wrote to memory of 832	1984	rtjwekgkjm.exe	rtjwekgkjm.exe
PID 1984 wrote to memory of 832	1984	rtjwekgkjm.exe	rtjwekgkjm.exe
PID 1984 wrote to memory of 832	1984	rtjwekgkjm.exe	rtjwekgkjm.exe
PID 1272 wrote to memory of 1988	1272	Explorer.EXE	cscript.exe
PID 1272 wrote to memory of 1988	1272	Explorer.EXE	cscript.exe
PID 1272 wrote to memory of 1988	1272	Explorer.EXE	cscript.exe
PID 1272 wrote to memory of 1988	1272	Explorer.EXE	cscript.exe
PID 1988 wrote to memory of 1936	1988	cscript.exe	cmd.exe
PID 1988 wrote to memory of 1936	1988	cscript.exe	cmd.exe
PID 1988 wrote to memory of 1936	1988	cscript.exe	cmd.exe
PID 1988 wrote to memory of 1936	1988	cscript.exe	cmd.exe
PID 1988 wrote to memory of 1316	1988	cscript.exe	Firefox.exe
PID 1988 wrote to memory of 1316	1988	cscript.exe	Firefox.exe
PID 1988 wrote to memory of 1316	1988	cscript.exe	Firefox.exe
PID 1988 wrote to memory of 1316	1988	cscript.exe	Firefox.exe
PID 1988 wrote to memory of 1316	1988	cscript.exe	Firefox.exe
PID 1272 wrote to memory of 616	1272	Explorer.EXE	ThumbCacherfc8.exe
PID 1272 wrote to memory of 616	1272	Explorer.EXE	ThumbCacherfc8.exe
PID 1272 wrote to memory of 616	1272	Explorer.EXE	ThumbCacherfc8.exe
PID 1272 wrote to memory of 616	1272	Explorer.EXE	ThumbCacherfc8.exe
PID 616 wrote to memory of 1692	616	ThumbCacherfc8.exe	WerFault.exe
PID 616 wrote to memory of 1692	616	ThumbCacherfc8.exe	WerFault.exe
PID 616 wrote to memory of 1692	616	ThumbCacherfc8.exe	WerFault.exe
PID 616 wrote to memory of 1692	616	ThumbCacherfc8.exe	WerFault.exe

System policy modification 1 TTPs 1 IoCs
evasion

Modify Registry
T1112

Processes:

cscript.exe

description ioc process

Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer cscript.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer	cscript.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Drops file in Program Files directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1272

C:\Users\Admin\AppData\Local\Temp\Swift Copy05262020.pdf.exe
"C:\Users\Admin\AppData\Local\Temp\Swift Copy05262020.pdf.exe"
2⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1100

C:\Users\Admin\AppData\Local\Temp\rtjwekgkjm.exe
C:\Users\Admin\AppData\Local\Temp\rtjwekgkjm.exe C:\Users\Admin\AppData\Local\Temp\jnianqsz
3⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1984

C:\Users\Admin\AppData\Local\Temp\rtjwekgkjm.exe
C:\Users\Admin\AppData\Local\Temp\rtjwekgkjm.exe C:\Users\Admin\AppData\Local\Temp\jnianqsz
4⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:832

C:\Windows\SysWOW64\cscript.exe
"C:\Windows\SysWOW64\cscript.exe"
2⤵
- Adds policy 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
- System policy modification
PID:1988

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\rtjwekgkjm.exe"
3⤵
PID:1936

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:1316

C:\Program Files (x86)\Otrzx0nnh\ThumbCacherfc8.exe
"C:\Program Files (x86)\Otrzx0nnh\ThumbCacherfc8.exe"
2⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:616

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 616 -s 192
3⤵
- Loads dropped DLL
- Program crash
PID:1692

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Credentials in Files

T1081

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Program Files (x86)\Otrzx0nnh\ThumbCacherfc8.exe
Filesize
187KB

MD5
51cd1475dac44b90ecd715ee289848ba

SHA1
9660741ad44c4ec69abc62891bbb0aa462001d1f

SHA256
88c512b70e574231d68f24689249cb30c359ea192ee667c8840c4146f7218993

SHA512
541048bbbaaa14a92bf3ab7921d61ac96f335c76705ba834860ffecb88176551f16111337fb8622ce4d67fd6574d49ca7f7484db6d7567a8aa626b5ab2af3f7d

Download Submit
C:\Program Files (x86)\Otrzx0nnh\ThumbCacherfc8.exe
Filesize
187KB

MD5
51cd1475dac44b90ecd715ee289848ba

SHA1
9660741ad44c4ec69abc62891bbb0aa462001d1f

SHA256
88c512b70e574231d68f24689249cb30c359ea192ee667c8840c4146f7218993

SHA512
541048bbbaaa14a92bf3ab7921d61ac96f335c76705ba834860ffecb88176551f16111337fb8622ce4d67fd6574d49ca7f7484db6d7567a8aa626b5ab2af3f7d

Download Submit
C:\Users\Admin\AppData\Local\Temp\4263sbwwg1i7i
Filesize
171KB

MD5
adafc1bd6fedbe5f73992bbf31f44991

SHA1
05b1f01d53016cac49c99e3255a015c3a8feefee

SHA256
39b7450d35e9b44a8e1a8b8bf69fed60a99532191600911a9018999b374b4989

SHA512
3248e472eeefa02a8652995fe2a016cd97e62e28655aacecadc56529845afcd4ba5b6cbd99ff9f4b281c27282429a749f2c226d2cb841321a0d8ca76ab186a88

Download Submit
C:\Users\Admin\AppData\Local\Temp\jnianqsz
Filesize
4KB

MD5
52f6fa9d66c85265d119cd735e446a33

SHA1
26eb6660ee34dc8baec4323296780fc53f652f34

SHA256
846e9ed6719f5fe6a44a25eaa9861674fed55ff1ece516c1ccc5ad5b45899608

SHA512
193d343db465b5c79fca0606316336cda81785eac4ceb1cd65d9301a94cd188a9b3bf9c2ec8b4ae70e7ef3db66940fcda015600706e28ead8778c8462259b194

Download Submit
C:\Users\Admin\AppData\Local\Temp\rtjwekgkjm.exe
Filesize
187KB

MD5
51cd1475dac44b90ecd715ee289848ba

SHA1
9660741ad44c4ec69abc62891bbb0aa462001d1f

SHA256
88c512b70e574231d68f24689249cb30c359ea192ee667c8840c4146f7218993

SHA512
541048bbbaaa14a92bf3ab7921d61ac96f335c76705ba834860ffecb88176551f16111337fb8622ce4d67fd6574d49ca7f7484db6d7567a8aa626b5ab2af3f7d

Download Submit
C:\Users\Admin\AppData\Local\Temp\rtjwekgkjm.exe
Filesize
187KB

MD5
51cd1475dac44b90ecd715ee289848ba

SHA1
9660741ad44c4ec69abc62891bbb0aa462001d1f

SHA256
88c512b70e574231d68f24689249cb30c359ea192ee667c8840c4146f7218993

SHA512
541048bbbaaa14a92bf3ab7921d61ac96f335c76705ba834860ffecb88176551f16111337fb8622ce4d67fd6574d49ca7f7484db6d7567a8aa626b5ab2af3f7d

Download Submit
C:\Users\Admin\AppData\Local\Temp\rtjwekgkjm.exe
Filesize
187KB

MD5
51cd1475dac44b90ecd715ee289848ba

SHA1
9660741ad44c4ec69abc62891bbb0aa462001d1f

SHA256
88c512b70e574231d68f24689249cb30c359ea192ee667c8840c4146f7218993

SHA512
541048bbbaaa14a92bf3ab7921d61ac96f335c76705ba834860ffecb88176551f16111337fb8622ce4d67fd6574d49ca7f7484db6d7567a8aa626b5ab2af3f7d

Download Submit
\Program Files (x86)\Otrzx0nnh\ThumbCacherfc8.exe
Filesize
187KB

MD5
51cd1475dac44b90ecd715ee289848ba

SHA1
9660741ad44c4ec69abc62891bbb0aa462001d1f

SHA256
88c512b70e574231d68f24689249cb30c359ea192ee667c8840c4146f7218993

SHA512
541048bbbaaa14a92bf3ab7921d61ac96f335c76705ba834860ffecb88176551f16111337fb8622ce4d67fd6574d49ca7f7484db6d7567a8aa626b5ab2af3f7d

Download Submit
\Program Files (x86)\Otrzx0nnh\ThumbCacherfc8.exe
Filesize
187KB

MD5
51cd1475dac44b90ecd715ee289848ba

SHA1
9660741ad44c4ec69abc62891bbb0aa462001d1f

SHA256
88c512b70e574231d68f24689249cb30c359ea192ee667c8840c4146f7218993

SHA512
541048bbbaaa14a92bf3ab7921d61ac96f335c76705ba834860ffecb88176551f16111337fb8622ce4d67fd6574d49ca7f7484db6d7567a8aa626b5ab2af3f7d

Download Submit
\Program Files (x86)\Otrzx0nnh\ThumbCacherfc8.exe
Filesize
187KB

MD5
51cd1475dac44b90ecd715ee289848ba

SHA1
9660741ad44c4ec69abc62891bbb0aa462001d1f

SHA256
88c512b70e574231d68f24689249cb30c359ea192ee667c8840c4146f7218993

SHA512
541048bbbaaa14a92bf3ab7921d61ac96f335c76705ba834860ffecb88176551f16111337fb8622ce4d67fd6574d49ca7f7484db6d7567a8aa626b5ab2af3f7d

Download Submit
\Program Files (x86)\Otrzx0nnh\ThumbCacherfc8.exe
Filesize
187KB

MD5
51cd1475dac44b90ecd715ee289848ba

SHA1
9660741ad44c4ec69abc62891bbb0aa462001d1f

SHA256
88c512b70e574231d68f24689249cb30c359ea192ee667c8840c4146f7218993

SHA512
541048bbbaaa14a92bf3ab7921d61ac96f335c76705ba834860ffecb88176551f16111337fb8622ce4d67fd6574d49ca7f7484db6d7567a8aa626b5ab2af3f7d

Download Submit
\Users\Admin\AppData\Local\Temp\rtjwekgkjm.exe
Filesize
187KB

MD5
51cd1475dac44b90ecd715ee289848ba

SHA1
9660741ad44c4ec69abc62891bbb0aa462001d1f

SHA256
88c512b70e574231d68f24689249cb30c359ea192ee667c8840c4146f7218993

SHA512
541048bbbaaa14a92bf3ab7921d61ac96f335c76705ba834860ffecb88176551f16111337fb8622ce4d67fd6574d49ca7f7484db6d7567a8aa626b5ab2af3f7d

Download Submit
\Users\Admin\AppData\Local\Temp\rtjwekgkjm.exe
Filesize
187KB

MD5
51cd1475dac44b90ecd715ee289848ba

SHA1
9660741ad44c4ec69abc62891bbb0aa462001d1f

SHA256
88c512b70e574231d68f24689249cb30c359ea192ee667c8840c4146f7218993

SHA512
541048bbbaaa14a92bf3ab7921d61ac96f335c76705ba834860ffecb88176551f16111337fb8622ce4d67fd6574d49ca7f7484db6d7567a8aa626b5ab2af3f7d

Download Submit
memory/616-79-0x0000000000000000-mapping.dmp

Download
memory/832-69-0x0000000000160000-0x0000000000171000-memory.dmp

Filesize
68KB

Download
memory/832-68-0x0000000000860000-0x0000000000B63000-memory.dmp

Filesize
3.0MB

Download
memory/832-67-0x0000000000400000-0x000000000042B000-memory.dmp

Filesize
172KB

Download
memory/832-64-0x000000000041F350-mapping.dmp

Download
memory/832-63-0x0000000000400000-0x000000000042B000-memory.dmp

Filesize
172KB

Download
memory/1100-54-0x00000000765C1000-0x00000000765C3000-memory.dmp

Filesize
8KB

Download
memory/1272-70-0x00000000070B0000-0x000000000725A000-memory.dmp

Filesize
1.7MB

Download
memory/1272-77-0x0000000007260000-0x0000000007363000-memory.dmp

Filesize
1.0MB

Download
memory/1692-82-0x0000000000000000-mapping.dmp

Download
memory/1936-74-0x0000000000000000-mapping.dmp

Download
memory/1984-56-0x0000000000000000-mapping.dmp

Download
memory/1988-76-0x0000000000260000-0x00000000002F0000-memory.dmp

Filesize
576KB

Download
memory/1988-75-0x00000000020D0000-0x00000000023D3000-memory.dmp

Filesize
3.0MB

Download
memory/1988-73-0x0000000000070000-0x000000000009B000-memory.dmp

Filesize
172KB

Download
memory/1988-72-0x00000000005D0000-0x00000000005F2000-memory.dmp

Filesize
136KB

Download
memory/1988-71-0x0000000000000000-mapping.dmp

Download