formbook | aa207e0f5f2bad97d8a0209d6d5b4583ecb32311aba7c6e996125f0a07c11c02

General

Target

Aquatherm Rechnungen 384890 _Xlxs.exe
Size

606KB
MD5

82015111b3cffed68fee74b525f3265b
SHA1

e43ae387a8bd5ce994a0529b0e1f0bc6c4ae8af3
SHA256

49f8b73df45213da0f86e871fbd8d231cdfcc30e7ef8041d38ef062884e47b2e
SHA512

54d227662a69606f19f23ddea553445f0f0e197928a12f31cbc24864233a63f4ddcab15293567ca051933b3e05180437077ab4b0c3e4895f2b8c39e702db3372

Score

10^/10

formbook k2w persistence rat spyware stealer suricata trojan

Malware Config

Extracted

Family

formbook

Version

3.9

Campaign

k2w

Decoy

brittanybeck.com

idapple.mobi

sharoncement.win

smerchenko.com

citizenssenergygroup.com

landhawktactical.com

yilingshenghuo.com

lifa97.com

8160pe.com

sf-purify.com

bloomingamaizing.com

thymeshares.com

rainwatercollectionhq.com

jaseba.net

whoistom.net

gn70.com

payperclickad.info

jessicagorbet.com

portlockproperty.com

mindset-beratung.com

Signatures

Formbook
Formbook is a data stealing malware which is capable of stealing data.
trojan spyware stealer formbook
suricata: ET MALWARE FormBook CnC Checkin (GET)
suricata: ET MALWARE FormBook CnC Checkin (GET)
suricata

Formbook Payload 1 IoCs

rat

Processes:

resource	yara_rule
behavioral2/memory/4544-138-0x0000000000BC0000-0x0000000000BEA000-memory.dmp	formbook

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

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

wlanext.exe

description	ioc	process
Key created	\Registry\Machine\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run	wlanext.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\PX4HX8KPZD = "C:\\Program Files (x86)\\U3fy\\apatq9rd.exe"	wlanext.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

Aquatherm Rechnungen 384890 _Xlxs.exeAquatherm Rechnungen 384890 _Xlxs.exewlanext.exe

description	pid	process	target process
PID 2028 set thread context of 368	2028	Aquatherm Rechnungen 384890 _Xlxs.exe	Aquatherm Rechnungen 384890 _Xlxs.exe
PID 368 set thread context of 2940	368	Aquatherm Rechnungen 384890 _Xlxs.exe	Explorer.EXE
PID 4544 set thread context of 2940	4544	wlanext.exe	Explorer.EXE

Drops file in Program Files directory 1 IoCs

Processes:

wlanext.exe

description ioc process

File opened for modification C:\Program Files (x86)\U3fy\apatq9rd.exe wlanext.exe

description	ioc	process
File opened for modification	C:\Program Files (x86)\U3fy\apatq9rd.exe	wlanext.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

wlanext.exe

description	ioc	process
Key created	\Registry\User\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	wlanext.exe

Suspicious behavior: EnumeratesProcesses 58 IoCs

Processes:

Aquatherm Rechnungen 384890 _Xlxs.exeAquatherm Rechnungen 384890 _Xlxs.exewlanext.exe

pid	process
2028	Aquatherm Rechnungen 384890 _Xlxs.exe
2028	Aquatherm Rechnungen 384890 _Xlxs.exe
368	Aquatherm Rechnungen 384890 _Xlxs.exe
368	Aquatherm Rechnungen 384890 _Xlxs.exe
368	Aquatherm Rechnungen 384890 _Xlxs.exe
368	Aquatherm Rechnungen 384890 _Xlxs.exe
4544	wlanext.exe
4544	wlanext.exe
4544	wlanext.exe
4544	wlanext.exe
4544	wlanext.exe
4544	wlanext.exe
4544	wlanext.exe
4544	wlanext.exe
4544	wlanext.exe
4544	wlanext.exe
4544	wlanext.exe
4544	wlanext.exe
4544	wlanext.exe
4544	wlanext.exe
4544	wlanext.exe
4544	wlanext.exe
4544	wlanext.exe
4544	wlanext.exe
4544	wlanext.exe
4544	wlanext.exe
4544	wlanext.exe
4544	wlanext.exe
4544	wlanext.exe
4544	wlanext.exe
4544	wlanext.exe
4544	wlanext.exe
4544	wlanext.exe
4544	wlanext.exe
4544	wlanext.exe
4544	wlanext.exe
4544	wlanext.exe
4544	wlanext.exe
4544	wlanext.exe
4544	wlanext.exe
4544	wlanext.exe
4544	wlanext.exe
4544	wlanext.exe
4544	wlanext.exe
4544	wlanext.exe
4544	wlanext.exe
4544	wlanext.exe
4544	wlanext.exe
4544	wlanext.exe
4544	wlanext.exe
4544	wlanext.exe
4544	wlanext.exe
4544	wlanext.exe
4544	wlanext.exe
4544	wlanext.exe
4544	wlanext.exe
4544	wlanext.exe
4544	wlanext.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

2940 Explorer.EXE

pid	process
2940	Explorer.EXE

Suspicious behavior: MapViewOfSection 6 IoCs

Processes:

Aquatherm Rechnungen 384890 _Xlxs.exeAquatherm Rechnungen 384890 _Xlxs.exewlanext.exe

pid	process
2028	Aquatherm Rechnungen 384890 _Xlxs.exe
368	Aquatherm Rechnungen 384890 _Xlxs.exe
368	Aquatherm Rechnungen 384890 _Xlxs.exe
368	Aquatherm Rechnungen 384890 _Xlxs.exe
4544	wlanext.exe
4544	wlanext.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

Processes:

Aquatherm Rechnungen 384890 _Xlxs.exewlanext.exeExplorer.EXE

description	pid	process
Token: SeDebugPrivilege	368	Aquatherm Rechnungen 384890 _Xlxs.exe
Token: SeDebugPrivilege	4544	wlanext.exe
Token: SeShutdownPrivilege	2940	Explorer.EXE
Token: SeCreatePagefilePrivilege	2940	Explorer.EXE
Token: SeShutdownPrivilege	2940	Explorer.EXE
Token: SeCreatePagefilePrivilege	2940	Explorer.EXE

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

Aquatherm Rechnungen 384890 _Xlxs.exeExplorer.EXEwlanext.exe

description	pid	process	target process
PID 2028 wrote to memory of 368	2028	Aquatherm Rechnungen 384890 _Xlxs.exe	Aquatherm Rechnungen 384890 _Xlxs.exe
PID 2028 wrote to memory of 368	2028	Aquatherm Rechnungen 384890 _Xlxs.exe	Aquatherm Rechnungen 384890 _Xlxs.exe
PID 2028 wrote to memory of 368	2028	Aquatherm Rechnungen 384890 _Xlxs.exe	Aquatherm Rechnungen 384890 _Xlxs.exe
PID 2940 wrote to memory of 4544	2940	Explorer.EXE	wlanext.exe
PID 2940 wrote to memory of 4544	2940	Explorer.EXE	wlanext.exe
PID 2940 wrote to memory of 4544	2940	Explorer.EXE	wlanext.exe
PID 4544 wrote to memory of 4288	4544	wlanext.exe	cmd.exe
PID 4544 wrote to memory of 4288	4544	wlanext.exe	cmd.exe
PID 4544 wrote to memory of 4288	4544	wlanext.exe	cmd.exe
PID 4544 wrote to memory of 1640	4544	wlanext.exe	cmd.exe
PID 4544 wrote to memory of 1640	4544	wlanext.exe	cmd.exe
PID 4544 wrote to memory of 1640	4544	wlanext.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2940
- C:\Users\Admin\AppData\Local\Temp\Aquatherm Rechnungen 384890 _Xlxs.exe
  "C:\Users\Admin\AppData\Local\Temp\Aquatherm Rechnungen 384890 _Xlxs.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:2028
- - C:\Users\Admin\AppData\Local\Temp\Aquatherm Rechnungen 384890 _Xlxs.exe
    "C:\Users\Admin\AppData\Local\Temp\Aquatherm Rechnungen 384890 _Xlxs.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:368
- C:\Windows\SysWOW64\wlanext.exe
  "C:\Windows\SysWOW64\wlanext.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:4544
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\Aquatherm Rechnungen 384890 _Xlxs.exe"
    3⤵
    PID:4288
- - 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:1640

Network

MITRE ATT&CK Enterprise 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

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

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
C:\Users\Admin\AppData\Roaming\-Q43QPT6\-Q4logim.jpeg

Filesize
77KB

MD5
55044fe3ca2d689baa1ca45bb6a8b8b9

SHA1
ce90528761f5c2e6ecdcbd8d882b7ba6325389ef

SHA256
d3b5b51e6773a5745ec2c99bbb7ebb5116195803414a310b14b2715dad15e29a

SHA512
e255a250c0898a5e75747deffd685ae443a8fecfde4acb60126ed6f28137c637f8d5bed61cd323db929f92f9bd1094b31daa388182ea6388adf10b72ae5542d1

Download Submit
C:\Users\Admin\AppData\Roaming\-Q43QPT6\-Q4logrg.ini

Filesize
38B

MD5
4aadf49fed30e4c9b3fe4a3dd6445ebe

SHA1
1e332822167c6f351b99615eada2c30a538ff037

SHA256
75034beb7bded9aeab5748f4592b9e1419256caec474065d43e531ec5cc21c56

SHA512
eb5b3908d5e7b43ba02165e092f05578f45f15a148b4c3769036aa542c23a0f7cd2bc2770cf4119a7e437de3f681d9e398511f69f66824c516d9b451bb95f945

Download Submit
C:\Users\Admin\AppData\Roaming\-Q43QPT6\-Q4logri.ini

Filesize
40B

MD5
d63a82e5d81e02e399090af26db0b9cb

SHA1
91d0014c8f54743bba141fd60c9d963f869d76c9

SHA256
eaece2eba6310253249603033c744dd5914089b0bb26bde6685ec9813611baae

SHA512
38afb05016d8f3c69d246321573997aaac8a51c34e61749a02bf5e8b2b56b94d9544d65801511044e1495906a86dc2100f2e20ff4fcbed09e01904cc780fdbad

Download Submit
C:\Users\Admin\AppData\Roaming\-Q43QPT6\-Q4logrv.ini

Filesize
872B

MD5
bbc41c78bae6c71e63cb544a6a284d94

SHA1
33f2c1d9fa0e9c99b80bc2500621e95af38b1f9a

SHA256
ee83c6bcea9353c74bfc0a7e739f3c4a765ace894470e09cdcdebba700b8d4cb

SHA512
0aea424b57adae3e14ad6491cab585f554b4dffe601b5a17bad6ee6177d2f0f995e419cde576e2d1782b9bddc0661aada11a2c9f1454ae625d9e3223635ec9f4

Download Submit
memory/368-132-0x0000000000A60000-0x0000000000DAA000-memory.dmp

Filesize
3.3MB

Download
memory/368-133-0x00000000005D0000-0x00000000005E4000-memory.dmp

Filesize
80KB

Download
memory/368-130-0x0000000000000000-mapping.dmp

Download
memory/1640-142-0x0000000000000000-mapping.dmp

Download
memory/2028-131-0x0000000000400000-0x000000000049E000-memory.dmp

Filesize
632KB

Download
memory/2940-134-0x00000000085F0000-0x00000000086B5000-memory.dmp

Filesize
788KB

Download
memory/2940-141-0x0000000008C20000-0x0000000008D53000-memory.dmp

Filesize
1.2MB

Download
memory/4288-136-0x0000000000000000-mapping.dmp

Download
memory/4544-140-0x0000000001780000-0x0000000001813000-memory.dmp

Filesize
588KB

Download
memory/4544-139-0x0000000001430000-0x000000000177A000-memory.dmp

Filesize
3.3MB

Download
memory/4544-138-0x0000000000BC0000-0x0000000000BEA000-memory.dmp

Filesize
168KB

Download
memory/4544-137-0x0000000000AB0000-0x0000000000AC7000-memory.dmp

Filesize
92KB

Download
memory/4544-135-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads