formbook | ea02ed6d1f37b7f0fd8b2f02ebf1b41ba2ca81c755f3590f95b509f45f45ae21

Analysis

max time kernel
152s
max time network
155s
platform
windows7_x64
resource
win7-20220414-en
submitted
19/05/2022, 08:27

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General

Target
bank_payment-doc.exe
Size 241KB
Sample220519-kceb5adaf7
SHA256 ea02ed6d1f37b7f0fd8b2f02ebf1b41ba2ca81c755f3590f95b509f45f45ae21
MD5 49cfa6f52d1d5c3f838974f1b059ef4d
SHA1 60938e875fa766889568d982e21eaa26eb13c7e9
SHA512 84df2a3bfc830725d368178d4f4da3322a61527661f12466a4ccbbe8fbef866efcc3b50102dea6bad43ec29deb181dfbb1a56317e8bd50b3bc9ba2ab96ac6a9d
MD5 SHA1 SHA512

Score

10^/10

formbook xloader u8pg loader rat spyware stealer suricata trojan

Malware Config

Extracted

Family

xloader

Version

Campaign

u8pg

Decoy

sjpizzeria.com
americangoodsdepot.com
presaleratings.com
yourlifeinmexico.com
2781chinookwindsdrive.com
clinic-yoshida.info
rita22.com
davidcerda.info
arjandejong.net
guodongu.com
mitosayam.com
trickers.xyz
donaotobrown.com
gvmetales.com
dwjgnd9.tech
gxuedujy.com
igrav.online
triptoasiam.com
tothecor.com
bruecke-purepassionmusic.com
3000004.com
waifuelcoffee.com
tbq7.com
ticketspace.xyz
cj3-enterprises.com
jxaqgtw.com
dhllojistik.online
67555.xyz
yorkingmoroow.com
victoralmeidaadv.com
aussiehempsters.com
via.tax
perfume-angels.com
teambruce6623.com
amplifybeautyco.com
yehoow.online
forestpositiveprint.com
xiaomi-account-id.info
mamantrepreneuses.online
uniqueyoucoffee.com
frozen-web.net
hytzyun.com
oneworld.golf
cannabislight.info
shopsurreylane.com
work-sport-balance.com
jeysea.net
76eju5s8.xyz
finesseon.com
cannabis108.com
insusty.com
p3e4.com
younamedical.com
pullovertruth.com
notestr.net
tulumfivestars.com
web3acquisitions.xyz
elversonpet.supply
saveoncarinsurance.life
dz80.net
fcei2b.com
kundenservicetelefon.com
benscup.com
zzdxdqy.com
legxrcise.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

resource	yara_rule
behavioral1/memory/1160-64-0x0000000000400000-0x000000000042B000-memory.dmp	xloader
behavioral1/memory/1160-65-0x000000000041F240-mapping.dmp	xloader
behavioral1/memory/1160-68-0x0000000000400000-0x000000000042B000-memory.dmp	xloader
behavioral1/memory/1720-75-0x0000000000110000-0x000000000013B000-memory.dmp	xloader

Executes dropped EXE 2 IoCs

pid	Process
1988	pcvhuhoxj.exe
1160	pcvhuhoxj.exe

Loads dropped DLL 3 IoCs

pid	Process
1464	bank_payment-doc.exe
1464	bank_payment-doc.exe
1988	pcvhuhoxj.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 1988 set thread context of 1160	1988	pcvhuhoxj.exe	30
PID 1160 set thread context of 1256	1160	pcvhuhoxj.exe	16
PID 1720 set thread context of 1256	1720	wuapp.exe	16

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

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

Suspicious behavior: EnumeratesProcesses 26 IoCs

pid	Process
1160	pcvhuhoxj.exe
1160	pcvhuhoxj.exe
1720	wuapp.exe
1720	wuapp.exe
1720	wuapp.exe
1720	wuapp.exe
1720	wuapp.exe
1720	wuapp.exe
1720	wuapp.exe
1720	wuapp.exe
1720	wuapp.exe
1720	wuapp.exe
1720	wuapp.exe
1720	wuapp.exe
1720	wuapp.exe
1720	wuapp.exe
1720	wuapp.exe
1720	wuapp.exe
1720	wuapp.exe
1720	wuapp.exe
1720	wuapp.exe
1720	wuapp.exe
1720	wuapp.exe
1720	wuapp.exe
1720	wuapp.exe
1720	wuapp.exe

Suspicious behavior: MapViewOfSection 7 IoCs

pid	Process
1160	pcvhuhoxj.exe
1160	pcvhuhoxj.exe
1160	pcvhuhoxj.exe
1720	wuapp.exe
1720	wuapp.exe
1720	wuapp.exe
1720	wuapp.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1160	pcvhuhoxj.exe
Token: SeDebugPrivilege	1720	wuapp.exe

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
1256	Explorer.EXE
1256	Explorer.EXE

Suspicious use of SendNotifyMessage 2 IoCs

pid	Process
1256	Explorer.EXE
1256	Explorer.EXE

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1464 wrote to memory of 1988	1464	bank_payment-doc.exe	28
PID 1464 wrote to memory of 1988	1464	bank_payment-doc.exe	28
PID 1464 wrote to memory of 1988	1464	bank_payment-doc.exe	28
PID 1464 wrote to memory of 1988	1464	bank_payment-doc.exe	28
PID 1988 wrote to memory of 1160	1988	pcvhuhoxj.exe	30
PID 1988 wrote to memory of 1160	1988	pcvhuhoxj.exe	30
PID 1988 wrote to memory of 1160	1988	pcvhuhoxj.exe	30
PID 1988 wrote to memory of 1160	1988	pcvhuhoxj.exe	30
PID 1988 wrote to memory of 1160	1988	pcvhuhoxj.exe	30
PID 1988 wrote to memory of 1160	1988	pcvhuhoxj.exe	30
PID 1988 wrote to memory of 1160	1988	pcvhuhoxj.exe	30
PID 1256 wrote to memory of 1720	1256	Explorer.EXE	31
PID 1256 wrote to memory of 1720	1256	Explorer.EXE	31
PID 1256 wrote to memory of 1720	1256	Explorer.EXE	31
PID 1256 wrote to memory of 1720	1256	Explorer.EXE	31
PID 1256 wrote to memory of 1720	1256	Explorer.EXE	31
PID 1256 wrote to memory of 1720	1256	Explorer.EXE	31
PID 1256 wrote to memory of 1720	1256	Explorer.EXE	31
PID 1720 wrote to memory of 804	1720	wuapp.exe	33
PID 1720 wrote to memory of 804	1720	wuapp.exe	33
PID 1720 wrote to memory of 804	1720	wuapp.exe	33
PID 1720 wrote to memory of 804	1720	wuapp.exe	33
PID 1720 wrote to memory of 804	1720	wuapp.exe	33

C:\Users\Admin\AppData\Local\Temp\bank_payment-doc.exe
"C:\Users\Admin\AppData\Local\Temp\bank_payment-doc.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1464
- C:\Users\Admin\AppData\Local\Temp\pcvhuhoxj.exe
  C:\Users\Admin\AppData\Local\Temp\pcvhuhoxj.exe C:\Users\Admin\AppData\Local\Temp\khhfof
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of SetThreadContext
  - Suspicious use of WriteProcessMemory
  PID:1988
- - C:\Users\Admin\AppData\Local\Temp\pcvhuhoxj.exe
    C:\Users\Admin\AppData\Local\Temp\pcvhuhoxj.exe C:\Users\Admin\AppData\Local\Temp\khhfof
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:1160

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1256
- C:\Windows\SysWOW64\wuapp.exe
  "C:\Windows\SysWOW64\wuapp.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Modifies Internet Explorer settings
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1720
- - C:\Program Files\Mozilla Firefox\Firefox.exe
    "C:\Program Files\Mozilla Firefox\Firefox.exe"
    3⤵
    PID:804

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

khhfof

Path C:\Users\Admin\AppData\Local\Temp\khhfof
Size 4KB
SHA256 6c0f6b0269a7db964d7664e728198144d0971660163dae7ccbaf9266f13657ff
MD5 8f3854eb33b854b93f262f8ed985b045
SHA1 912686b25f1989f87faf64bf95f502523bb94614
SHA512 8c116ac1bffe8d9a1f28a22a950a757084dab423838879e0964798f300570bb549ddb2edd0d1563bb78dbc40ba377b38d4dba42f93bffc31de02d29addb78595
SSDEEP 96:jUJz9KTu9YP2YHHJvpQVHi/RMenTVqdLUJ+pdK2Gj59xD:TORiACTV8HPKdj59xD
MD5 SHA1 SHA512 SSDEEP

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pcvhuhoxj.exe

Path C:\Users\Admin\AppData\Local\Temp\pcvhuhoxj.exe
Size 4KB
SHA256 3bbc1be5759da471c6a9125dd604c29c8c713a9dc680d887de470c2877d391b7
MD5 5081c77ecc48732bd10a1b7fb8f353db
SHA1 47e5dee6b1f9689b31bd9e084adcdee52561d525
SHA512 f2b5be13185f62212409c16fe472571b089e5267cc79cb872852206e7e516fe9feea5a1ab639c8513c8ab9c313de9694c64f94fd487ae808cd183a521080febf
MD5 SHA1 SHA512

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pcvhuhoxj.exe

Path C:\Users\Admin\AppData\Local\Temp\pcvhuhoxj.exe
Size 4KB
SHA256 3bbc1be5759da471c6a9125dd604c29c8c713a9dc680d887de470c2877d391b7
MD5 5081c77ecc48732bd10a1b7fb8f353db
SHA1 47e5dee6b1f9689b31bd9e084adcdee52561d525
SHA512 f2b5be13185f62212409c16fe472571b089e5267cc79cb872852206e7e516fe9feea5a1ab639c8513c8ab9c313de9694c64f94fd487ae808cd183a521080febf
MD5 SHA1 SHA512

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pcvhuhoxj.exe

Path C:\Users\Admin\AppData\Local\Temp\pcvhuhoxj.exe
Size 4KB
SHA256 3bbc1be5759da471c6a9125dd604c29c8c713a9dc680d887de470c2877d391b7
MD5 5081c77ecc48732bd10a1b7fb8f353db
SHA1 47e5dee6b1f9689b31bd9e084adcdee52561d525
SHA512 f2b5be13185f62212409c16fe472571b089e5267cc79cb872852206e7e516fe9feea5a1ab639c8513c8ab9c313de9694c64f94fd487ae808cd183a521080febf
MD5 SHA1 SHA512

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x1oo7dj593fws9

Path C:\Users\Admin\AppData\Local\Temp\x1oo7dj593fws9
Size 170KB
SHA256 2f4a3598e4d918a1f17f65d5711256c46e1ee57ff8a1d38dae05cb57adffc1a3
MD5 db87cc5d648560c923f0d40d3a1886f2
SHA1 8d385744a032c422837ea9e42843fbaa97662406
SHA512 73a1ea6c0367167e505faa8877db085545ac01eaba7987816d53f94162154f7769b41340551ea25335cad91dbb93627760b2766d623a16708abfbd9cffbe78ee
SSDEEP 3072:LlX9dTYYMI5zY1Pz7ltE+HSiADz/jKPXe8MH1FHXthH7y8sSXFq:LWcmJ77EFiAP2/e8Y1hXrW8fFq
MD5 SHA1 SHA512 SSDEEP

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pcvhuhoxj.exe

Path \Users\Admin\AppData\Local\Temp\pcvhuhoxj.exe
Size 4KB
SHA256 3bbc1be5759da471c6a9125dd604c29c8c713a9dc680d887de470c2877d391b7
MD5 5081c77ecc48732bd10a1b7fb8f353db
SHA1 47e5dee6b1f9689b31bd9e084adcdee52561d525
SHA512 f2b5be13185f62212409c16fe472571b089e5267cc79cb872852206e7e516fe9feea5a1ab639c8513c8ab9c313de9694c64f94fd487ae808cd183a521080febf
MD5 SHA1 SHA512

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pcvhuhoxj.exe

Path \Users\Admin\AppData\Local\Temp\pcvhuhoxj.exe
Size 4KB
SHA256 3bbc1be5759da471c6a9125dd604c29c8c713a9dc680d887de470c2877d391b7
MD5 5081c77ecc48732bd10a1b7fb8f353db
SHA1 47e5dee6b1f9689b31bd9e084adcdee52561d525
SHA512 f2b5be13185f62212409c16fe472571b089e5267cc79cb872852206e7e516fe9feea5a1ab639c8513c8ab9c313de9694c64f94fd487ae808cd183a521080febf
MD5 SHA1 SHA512

Submit Download

pcvhuhoxj.exe

Path \Users\Admin\AppData\Local\Temp\pcvhuhoxj.exe
Size 4KB
SHA256 3bbc1be5759da471c6a9125dd604c29c8c713a9dc680d887de470c2877d391b7
MD5 5081c77ecc48732bd10a1b7fb8f353db
SHA1 47e5dee6b1f9689b31bd9e084adcdee52561d525
SHA512 f2b5be13185f62212409c16fe472571b089e5267cc79cb872852206e7e516fe9feea5a1ab639c8513c8ab9c313de9694c64f94fd487ae808cd183a521080febf
MD5 SHA1 SHA512

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memory/1160-69-0x0000000000750000-0x0000000000A53000-memory.dmp

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memory/1160-64-0x0000000000400000-0x000000000042B000-memory.dmp

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memory/1160-70-0x0000000000460000-0x0000000000471000-memory.dmp

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memory/1160-68-0x0000000000400000-0x000000000042B000-memory.dmp

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memory/1256-71-0x0000000006640000-0x000000000674A000-memory.dmp

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memory/1256-77-0x00000000068F0000-0x0000000006A3B000-memory.dmp

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memory/1464-54-0x00000000754A1000-0x00000000754A3000-memory.dmp

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memory/1720-73-0x0000000000AD0000-0x0000000000ADB000-memory.dmp

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memory/1720-74-0x0000000001EE0000-0x00000000021E3000-memory.dmp

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memory/1720-75-0x0000000000110000-0x000000000013B000-memory.dmp

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memory/1720-76-0x00000000003C0000-0x0000000000450000-memory.dmp

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