formbook | aa605f7e6a23b17090604ec107d82f01ab49221b590f8b966d2906bbf0a0214f

General

Target

K.exe
Size

723KB
MD5

de5ca69a7939c4a8ce6846463990aa7b
SHA1

358c3f58194ccc713f000e194024b817f6cb5320
SHA256

5bc9d0c8fd02f1c138178b1291378304a653717076f9e12ba4334609dcf7b11c
SHA512

827bb09597d0226e27e2740886993593d7565d1bb5d130ee46bd87c6663f1cb60ac369a3272675fad8c8d8789e3b6aaf822ef13bcdf89cf821830ce795a7f7c6

Score

10^/10

formbook xloader t75f loader persistence rat spyware stealer trojan

Malware Config

Extracted

Family

xloader

Version

2.3

Campaign

t75f

C2

http://www.vertexnailsblaine.com/t75f/

Decoy

onegolfsydney.com

kaizensportscoaching.com

mliacbjv.icu

rinstech.net

midas-parts.com

istmenian.com

ibrahimpike.com

herbspaces.com

gentleman4higher.com

workabusiness.com

isabusive.website

222555dy.com

lwhyzhzb.xyz

gabrielabravoillanes.com

hearthomelife.com

buildswealth.com

printitaz.com

l-mventures.com

baincot3.com

nstaq-labs.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 3 IoCs

rat

Processes:

resource	yara_rule
behavioral2/memory/632-124-0x0000000000400000-0x0000000000429000-memory.dmp	xloader
behavioral2/memory/632-125-0x000000000041D110-mapping.dmp	xloader
behavioral2/memory/996-132-0x0000000000B50000-0x0000000000B79000-memory.dmp	xloader

Executes dropped EXE 1 IoCs

Processes:

regsvcrl4lm.exe

pid process

1680 regsvcrl4lm.exe

pid	process
1680	regsvcrl4lm.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

netsh.exe

description	ioc	process
Key created	\Registry\Machine\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run	netsh.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\D2LX5HTXGVE = "C:\\Program Files (x86)\\C1be\\regsvcrl4lm.exe"	netsh.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

K.exeRegSvcs.exenetsh.exe

description	pid	process	target process
PID 4796 set thread context of 632	4796	K.exe	RegSvcs.exe
PID 632 set thread context of 2900	632	RegSvcs.exe	Explorer.EXE
PID 996 set thread context of 2900	996	netsh.exe	Explorer.EXE

Drops file in Program Files directory 4 IoCs

Processes:

netsh.exeExplorer.EXE

description	ioc	process
File opened for modification	C:\Program Files (x86)\C1be\regsvcrl4lm.exe	netsh.exe
File opened for modification	C:\Program Files (x86)\C1be	Explorer.EXE
File created	C:\Program Files (x86)\C1be\regsvcrl4lm.exe	Explorer.EXE
File opened for modification	C:\Program Files (x86)\C1be\regsvcrl4lm.exe	Explorer.EXE

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

netsh.exe

description	ioc	process
Key created	\Registry\User\S-1-5-21-1594587808-2047097707-2163810515-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	netsh.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

K.exeRegSvcs.exenetsh.exe

pid	process
4796	K.exe
4796	K.exe
632	RegSvcs.exe
632	RegSvcs.exe
632	RegSvcs.exe
632	RegSvcs.exe
996	netsh.exe
996	netsh.exe
996	netsh.exe
996	netsh.exe
996	netsh.exe
996	netsh.exe
996	netsh.exe
996	netsh.exe
996	netsh.exe
996	netsh.exe
996	netsh.exe
996	netsh.exe
996	netsh.exe
996	netsh.exe
996	netsh.exe
996	netsh.exe
996	netsh.exe
996	netsh.exe
996	netsh.exe
996	netsh.exe
996	netsh.exe
996	netsh.exe
996	netsh.exe
996	netsh.exe
996	netsh.exe
996	netsh.exe
996	netsh.exe
996	netsh.exe
996	netsh.exe
996	netsh.exe
996	netsh.exe
996	netsh.exe
996	netsh.exe
996	netsh.exe
996	netsh.exe
996	netsh.exe
996	netsh.exe
996	netsh.exe
996	netsh.exe
996	netsh.exe
996	netsh.exe
996	netsh.exe
996	netsh.exe
996	netsh.exe
996	netsh.exe
996	netsh.exe
996	netsh.exe
996	netsh.exe
996	netsh.exe
996	netsh.exe
996	netsh.exe
996	netsh.exe
996	netsh.exe
996	netsh.exe
996	netsh.exe
996	netsh.exe
996	netsh.exe
996	netsh.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

2900 Explorer.EXE
Suspicious behavior: MapViewOfSection 7 IoCs

Processes:

RegSvcs.exenetsh.exe

pid process

632 RegSvcs.exe
632 RegSvcs.exe
632 RegSvcs.exe
996 netsh.exe
996 netsh.exe
996 netsh.exe
996 netsh.exe

pid	process
2900	Explorer.EXE

pid	process
632	RegSvcs.exe
632	RegSvcs.exe
632	RegSvcs.exe
996	netsh.exe
996	netsh.exe
996	netsh.exe
996	netsh.exe

Suspicious use of AdjustPrivilegeToken 13 IoCs

Processes:

K.exeRegSvcs.exenetsh.exeExplorer.EXE

description	pid	process
Token: SeDebugPrivilege	4796	K.exe
Token: SeDebugPrivilege	632	RegSvcs.exe
Token: SeDebugPrivilege	996	netsh.exe
Token: SeShutdownPrivilege	2900	Explorer.EXE
Token: SeCreatePagefilePrivilege	2900	Explorer.EXE
Token: SeShutdownPrivilege	2900	Explorer.EXE
Token: SeCreatePagefilePrivilege	2900	Explorer.EXE
Token: SeShutdownPrivilege	2900	Explorer.EXE
Token: SeCreatePagefilePrivilege	2900	Explorer.EXE
Token: SeShutdownPrivilege	2900	Explorer.EXE
Token: SeCreatePagefilePrivilege	2900	Explorer.EXE
Token: SeShutdownPrivilege	2900	Explorer.EXE
Token: SeCreatePagefilePrivilege	2900	Explorer.EXE

Suspicious use of UnmapMainImage 1 IoCs

Processes:

Explorer.EXE

pid process

2900 Explorer.EXE

pid	process
2900	Explorer.EXE

Suspicious use of WriteProcessMemory 18 IoCs

Processes:

K.exeExplorer.EXEnetsh.exe

description	pid	process	target process
PID 4796 wrote to memory of 632	4796	K.exe	RegSvcs.exe
PID 4796 wrote to memory of 632	4796	K.exe	RegSvcs.exe
PID 4796 wrote to memory of 632	4796	K.exe	RegSvcs.exe
PID 4796 wrote to memory of 632	4796	K.exe	RegSvcs.exe
PID 4796 wrote to memory of 632	4796	K.exe	RegSvcs.exe
PID 4796 wrote to memory of 632	4796	K.exe	RegSvcs.exe
PID 2900 wrote to memory of 996	2900	Explorer.EXE	netsh.exe
PID 2900 wrote to memory of 996	2900	Explorer.EXE	netsh.exe
PID 2900 wrote to memory of 996	2900	Explorer.EXE	netsh.exe
PID 996 wrote to memory of 1032	996	netsh.exe	cmd.exe
PID 996 wrote to memory of 1032	996	netsh.exe	cmd.exe
PID 996 wrote to memory of 1032	996	netsh.exe	cmd.exe
PID 996 wrote to memory of 1652	996	netsh.exe	Firefox.exe
PID 996 wrote to memory of 1652	996	netsh.exe	Firefox.exe
PID 2900 wrote to memory of 1680	2900	Explorer.EXE	regsvcrl4lm.exe
PID 2900 wrote to memory of 1680	2900	Explorer.EXE	regsvcrl4lm.exe
PID 2900 wrote to memory of 1680	2900	Explorer.EXE	regsvcrl4lm.exe
PID 996 wrote to memory of 1652	996	netsh.exe	Firefox.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Drops file in Program Files directory
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2900

C:\Users\Admin\AppData\Local\Temp\K.exe
"C:\Users\Admin\AppData\Local\Temp\K.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4796

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:632

C:\Windows\SysWOW64\netsh.exe
"C:\Windows\SysWOW64\netsh.exe"
2⤵
- 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:996

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
3⤵
PID:1032

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:1652

C:\Program Files (x86)\C1be\regsvcrl4lm.exe
"C:\Program Files (x86)\C1be\regsvcrl4lm.exe"
2⤵
- Executes dropped EXE
PID:1680

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

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Program Files (x86)\C1be\regsvcrl4lm.exe
MD5
0e06054beb13192588e745ee63a84173

SHA1
30b7d4d1277bafd04a83779fd566a1f834a8d113

SHA256
c5d6d56ded55fbd6c150ee3a0eb2e5671cae83106be2be4d70ce50aa50bab768

SHA512
251a112f3f037e62ff67a467389e47a56afb344bc942b17efa9bd2970494718b26bbee9adc3ac35f93ee4d2114aa426b6d0ea4bafad294b6c118a15f1977c215

Download Submit
C:\Program Files (x86)\C1be\regsvcrl4lm.exe
MD5
0e06054beb13192588e745ee63a84173

SHA1
30b7d4d1277bafd04a83779fd566a1f834a8d113

SHA256
c5d6d56ded55fbd6c150ee3a0eb2e5671cae83106be2be4d70ce50aa50bab768

SHA512
251a112f3f037e62ff67a467389e47a56afb344bc942b17efa9bd2970494718b26bbee9adc3ac35f93ee4d2114aa426b6d0ea4bafad294b6c118a15f1977c215

Download Submit
memory/632-124-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/632-126-0x00000000013D0000-0x00000000016F0000-memory.dmp

Filesize
3.1MB

Download
memory/632-127-0x0000000000E00000-0x0000000000F4A000-memory.dmp

Filesize
1.3MB

Download
memory/632-125-0x000000000041D110-mapping.dmp

Download
memory/996-129-0x0000000000000000-mapping.dmp

Download
memory/996-134-0x0000000003290000-0x000000000331F000-memory.dmp

Filesize
572KB

Download
memory/996-133-0x00000000035D0000-0x00000000038F0000-memory.dmp

Filesize
3.1MB

Download
memory/996-132-0x0000000000B50000-0x0000000000B79000-memory.dmp

Filesize
164KB

Download
memory/996-131-0x00000000010F0000-0x000000000110E000-memory.dmp

Filesize
120KB

Download
memory/1032-130-0x0000000000000000-mapping.dmp

Download
memory/1652-143-0x00007FF631500000-0x00007FF631593000-memory.dmp

Filesize
588KB

Download
memory/1652-144-0x000001C59D590000-0x000001C59D65E000-memory.dmp

Filesize
824KB

Download
memory/1652-142-0x0000000000000000-mapping.dmp

Download
memory/1680-136-0x0000000000000000-mapping.dmp

Download
memory/1680-139-0x0000000000400000-0x0000000000401000-memory.dmp

Filesize
4KB

Download
memory/1680-141-0x0000000000D90000-0x0000000000D91000-memory.dmp

Filesize
4KB

Download
memory/1680-140-0x0000000002750000-0x0000000002751000-memory.dmp

Filesize
4KB

Download
memory/2900-128-0x0000000006420000-0x000000000650A000-memory.dmp

Filesize
936KB

Download
memory/2900-135-0x0000000006510000-0x000000000661F000-memory.dmp

Filesize
1.1MB

Download
memory/4796-119-0x0000000007CD0000-0x0000000007CD1000-memory.dmp

Filesize
4KB

Download
memory/4796-122-0x0000000009960000-0x00000000099C0000-memory.dmp

Filesize
384KB

Download
memory/4796-116-0x0000000008140000-0x0000000008141000-memory.dmp

Filesize
4KB

Download
memory/4796-117-0x0000000007D20000-0x0000000007D21000-memory.dmp

Filesize
4KB

Download
memory/4796-114-0x0000000000F10000-0x0000000000F11000-memory.dmp

Filesize
4KB

Download
memory/4796-118-0x0000000007C40000-0x000000000813E000-memory.dmp

Filesize
5.0MB

Download
memory/4796-120-0x000000000A0A0000-0x000000000A0A1000-memory.dmp

Filesize
4KB

Download
memory/4796-121-0x0000000007F10000-0x0000000007F26000-memory.dmp

Filesize
88KB

Download
memory/4796-123-0x0000000001970000-0x000000000199A000-memory.dmp

Filesize
168KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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