formbook | b01ea964fe231d0b56d71ca6b447a1d51a31530e307227ff44fa8552f86bf3d5

Analysis

max time kernel
148s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20220414-en
submitted
27/06/2022, 08:24

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General

Target
5th Hire remittance copy.exe
Size 503KB
Sample220627-kap1vahham
SHA256 b01ea964fe231d0b56d71ca6b447a1d51a31530e307227ff44fa8552f86bf3d5
MD5 c8c5be1ddcbab78c1e6445ecb20530a5
SHA1 99e7cde8be31494e739877882711d5f7ca2794a3
SHA512 89485789e7c8769c0485d4f58712dcf01b94f5749b0a9eda8d66280f56bfc1330ecf501554393236a0314f4eb3e23763289be552c1663c8e3110444cf724f031
MD5 SHA1 SHA512

Score

10^/10

formbook xloader d89x loader persistence rat spyware stealer suricata trojan

Malware Config

Extracted

Family

xloader

Version

Campaign

d89x

Decoy

e3/aLpiFX66wRrmRS1ypsw==
hgm3Pm4G/TiClXPQ2vBn
z6ivc64lvq53R3ZHvg==
VBg3ToevLyfdU62DS1ypsw==
bipHWeOBQoimFEXZpgY=
wtXm2xiYX5l8R3ZHvg==
+2UhreV6Xpx1N2cxqQ==
INHHkwKlbJ12R3ZHvg==
hGikrCu3AUncswL4
JGzbMlsHBkjJrBI=
Z23GFoCMkIEidVIqqXCtDEyIV19a30I=
aGKJoA83SUPpqRHrYkijsaYXxNIRxU0=
eEshmREFFIWDOZd3Ahxsqx0S4mE=
eJRM2F2Q1vO2n0XZpgY=
16ShceqAEgvUXMuze+xath0S4mE=
oqABWtYGTYlYOaR6+Et3yxI6AQ==
rX2KWMFd8lBP7NW7aSx+ieoW9xuRDw==
KrZ1DngIlEQytgU=
cCob2BnF2FBZ/GhD74uzCzo=
zouowObcIU8oxuFxPSJo
hxHusyDCg76VG4BU1htTlthKBA==
6ulGksbGG1Yxr55oOHXHAtLDqvNX
2rfzB4sguKxbETwbyx4=
z98pPDm8bDw=
pO1HQcRlH+ibiiXJdlW1rQ==
yA2uOGH3yQna5VAetg==
i9pgtzk6w//6
64mDVM1n//GJ4T4csBqNDv4z82M=
Jz2MhQmvQ6m+kH1RLkOpvvFJ8HY=
0vu2UoEeKDbbpEXZpgY=
YqD1BkNf30kgJBTv
lI7sLTm8bDw=
TUS3vreVJFIrtumNUDNv
5elWjw2NDQevdlRD7ouzCzo=
+7mkZKxD1UMfrA==
badN3VlPVVUO8mw+74uzCzo=
f2upt/UpvLsgJBTv
jNCiaq81AS3rzbubS1ypsw==
3CN6e/yKTHdI1nke0hs=
DennveT8R4CK5E4foAFKlthKBA==
UpZB1v2MX6ODR3ZHvg==
7eEiMVxZo8l74NW0OouzCzo=
0F0ttCgrMDsp3b2cYjSB1qsC9xuRDw==
LjeJh/pHFQ/CLJaAdrsncrjfktIRxU0=
ejxpdO6EQ3lLJX3nqoCQQP6/eeFA
NYMMVrvZE1EgJBTv
zDDGEIGNr7YsUMOdDA8=
lltOB5qv8CYOvql9RVi5wchG7BR+b40S
Z7QTDBvSBRP0
0G96MXg5QCbEfueMelY4zepm
yqAfHmTSBRP0
ux3ybeIBx//ApRA=
IkvMDYa+BEogJBTv
RgMmMqUdaKpHEOuMeeZw
Ctvksy3ho+fooP/keGGdmZwf3lR+b40S
oynRWujwAPSQTs1gIHGwsQ==
ypRttdxV1UMfrA==
FCmu+jo1TkD5ZVAc5Ui+1LbfmtIRxU0=
3sHo4lrWW1f/0LqbS1ypsw==
smlsJSQRIpaAR3ZHvg==
bNS1g71PJFgwvi0L1IuzCzo=
WiJX2yG1ty855oEc3B8=
94FrJWj08gG2KBPt1Slztx0S4mE=
HEo5Pbs1v7sgJBTv
markslaundromat.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
suricata: ET MALWARE FormBook CnC Checkin (POST) M2
suricata: ET MALWARE FormBook CnC Checkin (POST) M2
suricata

Xloader Payload 5 IoCs

rat

resource	yara_rule
behavioral2/memory/532-136-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral2/memory/532-138-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral2/memory/532-146-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral2/memory/2796-148-0x00000000010A0000-0x00000000010CC000-memory.dmp	xloader
behavioral2/memory/2796-153-0x00000000010A0000-0x00000000010CC000-memory.dmp	xloader

Adds policy Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	wlanext.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\UJ5XYZ_H1NY = "C:\\Program Files (x86)\\Wdd0dor\\wz7xtxct-.exe"	wlanext.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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Control Panel\International\Geo\Nation	5th Hire remittance copy.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

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 944 set thread context of 532	944	5th Hire remittance copy.exe	88
PID 532 set thread context of 3172	532	5th Hire remittance copy.exe	55
PID 532 set thread context of 3172	532	5th Hire remittance copy.exe	55
PID 2796 set thread context of 3172	2796	wlanext.exe	55

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Wdd0dor\wz7xtxct-.exe	wlanext.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\Registry\User\S-1-5-21-3751123196-3323558407-1869646069-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	wlanext.exe

Suspicious behavior: EnumeratesProcesses 48 IoCs

pid	Process
532	5th Hire remittance copy.exe
532	5th Hire remittance copy.exe
532	5th Hire remittance copy.exe
532	5th Hire remittance copy.exe
532	5th Hire remittance copy.exe
532	5th Hire remittance copy.exe
2796	wlanext.exe
2796	wlanext.exe
2796	wlanext.exe
2796	wlanext.exe
2796	wlanext.exe
2796	wlanext.exe
2796	wlanext.exe
2796	wlanext.exe
2796	wlanext.exe
2796	wlanext.exe
2796	wlanext.exe
2796	wlanext.exe
2796	wlanext.exe
2796	wlanext.exe
2796	wlanext.exe
2796	wlanext.exe
2796	wlanext.exe
2796	wlanext.exe
2796	wlanext.exe
2796	wlanext.exe
2796	wlanext.exe
2796	wlanext.exe
2796	wlanext.exe
2796	wlanext.exe
2796	wlanext.exe
2796	wlanext.exe
2796	wlanext.exe
2796	wlanext.exe
2796	wlanext.exe
2796	wlanext.exe
2796	wlanext.exe
2796	wlanext.exe
2796	wlanext.exe
2796	wlanext.exe
2796	wlanext.exe
2796	wlanext.exe
2796	wlanext.exe
2796	wlanext.exe
2796	wlanext.exe
2796	wlanext.exe
2796	wlanext.exe
2796	wlanext.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3172	Explorer.EXE

Suspicious behavior: MapViewOfSection 8 IoCs

pid	Process
532	5th Hire remittance copy.exe
532	5th Hire remittance copy.exe
532	5th Hire remittance copy.exe
532	5th Hire remittance copy.exe
2796	wlanext.exe
2796	wlanext.exe
2796	wlanext.exe
2796	wlanext.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	532	5th Hire remittance copy.exe
Token: SeDebugPrivilege	2796	wlanext.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 944 wrote to memory of 532	944	5th Hire remittance copy.exe	88
PID 944 wrote to memory of 532	944	5th Hire remittance copy.exe	88
PID 944 wrote to memory of 532	944	5th Hire remittance copy.exe	88
PID 944 wrote to memory of 532	944	5th Hire remittance copy.exe	88
PID 944 wrote to memory of 532	944	5th Hire remittance copy.exe	88
PID 944 wrote to memory of 532	944	5th Hire remittance copy.exe	88
PID 3172 wrote to memory of 2796	3172	Explorer.EXE	90
PID 3172 wrote to memory of 2796	3172	Explorer.EXE	90
PID 3172 wrote to memory of 2796	3172	Explorer.EXE	90
PID 2796 wrote to memory of 2928	2796	wlanext.exe	91
PID 2796 wrote to memory of 2928	2796	wlanext.exe	91
PID 2796 wrote to memory of 2928	2796	wlanext.exe	91
PID 2796 wrote to memory of 3652	2796	wlanext.exe	93
PID 2796 wrote to memory of 3652	2796	wlanext.exe	93
PID 2796 wrote to memory of 3652	2796	wlanext.exe	93
PID 2796 wrote to memory of 1012	2796	wlanext.exe	95
PID 2796 wrote to memory of 1012	2796	wlanext.exe	95
PID 2796 wrote to memory of 1012	2796	wlanext.exe	95
PID 2796 wrote to memory of 4720	2796	wlanext.exe	97
PID 2796 wrote to memory of 4720	2796	wlanext.exe	97
PID 2796 wrote to memory of 4720	2796	wlanext.exe	97

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:3172
- C:\Users\Admin\AppData\Local\Temp\5th Hire remittance copy.exe
  "C:\Users\Admin\AppData\Local\Temp\5th Hire remittance copy.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of WriteProcessMemory
  PID:944
- - C:\Users\Admin\AppData\Local\Temp\5th Hire remittance copy.exe
    "C:\Users\Admin\AppData\Local\Temp\5th Hire remittance copy.exe"
    3⤵
    - Checks computer location settings
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:532
- C:\Windows\SysWOW64\wlanext.exe
  "C:\Windows\SysWOW64\wlanext.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
  PID:2796
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\5th Hire remittance copy.exe"
    3⤵
    PID:2928
- - 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:3652
- - C:\Windows\SysWOW64\cmd.exe
    /c copy "C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Login Data" "C:\Users\Admin\AppData\Local\Temp\DB1" /V
    3⤵
    PID:1012
- - C:\Program Files\Mozilla Firefox\Firefox.exe
    "C:\Program Files\Mozilla Firefox\Firefox.exe"
    3⤵
    PID:4720

Network

MITRE ATT&CK Enterprise 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

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

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Downloads

DB1

Path C:\Users\Admin\AppData\Local\Temp\DB1
Size 40KB
SHA256 b281ce54125d4250a80f48fcc02a8eea53f2c35c3b726e2512c3d493da0013bf
MD5 b608d407fc15adea97c26936bc6f03f6
SHA1 953e7420801c76393902c0d6bb56148947e41571
SHA512 cc96ddf4bf90d6aaa9d86803cb2aa30cd8e9b295aee1bd5544b88aeab63dc60bb1d4641e846c9771bab51aabbfbcd984c6d3ee83b96f5b65d09c0841d464b9e4
SSDEEP 48:2j3WBA+IIYICVEq8MX0D0HSFlNUK6lGNxGt7KLk8s8LKvUf9KVyJ7hU:u2FCn8MZyFlulGNxGt7KLyeymw
MD5 SHA1 SHA512 SSDEEP

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DB1

Path C:\Users\Admin\AppData\Local\Temp\DB1
Size 48KB
SHA256 c9fd7be4579e4aa942e8c2b44ab10115fa6c2fe6afd0c584865413d9d53f3b2a
MD5 349e6eb110e34a08924d92f6b334801d
SHA1 bdfb289daff51890cc71697b6322aa4b35ec9169
SHA512 2a635b815a5e117ea181ee79305ee1baf591459427acc5210d8c6c7e447be3513ead871c605eb3d32e4ab4111b2a335f26520d0ef8c1245a4af44e1faec44574
SSDEEP 96:uRMKLyeymwxCn8MZyFlSynlbiXyKwt8hG:uRkxGOXnlbibhG
MD5 SHA1 SHA512 SSDEEP

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memory/532-139-0x00000000016A0000-0x00000000019EA000-memory.dmp

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memory/532-136-0x0000000000400000-0x000000000042C000-memory.dmp

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memory/532-138-0x0000000000400000-0x000000000042C000-memory.dmp

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memory/532-140-0x0000000001B10000-0x0000000001B21000-memory.dmp

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memory/532-143-0x0000000003490000-0x00000000034A1000-memory.dmp

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memory/532-146-0x0000000000400000-0x000000000042C000-memory.dmp

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memory/944-133-0x0000000005230000-0x000000000523A000-memory.dmp

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memory/944-134-0x0000000008C10000-0x0000000008CAC000-memory.dmp

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memory/944-130-0x0000000000810000-0x0000000000894000-memory.dmp

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memory/944-132-0x00000000052F0000-0x0000000005382000-memory.dmp

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memory/944-131-0x00000000058A0000-0x0000000005E44000-memory.dmp

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memory/2796-150-0x0000000001940000-0x0000000001C8A000-memory.dmp

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memory/2796-147-0x0000000000930000-0x0000000000947000-memory.dmp

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memory/2796-148-0x00000000010A0000-0x00000000010CC000-memory.dmp

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memory/2796-151-0x0000000001660000-0x00000000016F0000-memory.dmp

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memory/2796-153-0x00000000010A0000-0x00000000010CC000-memory.dmp

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memory/3172-152-0x0000000008C10000-0x0000000008D1F000-memory.dmp

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memory/3172-154-0x0000000008C10000-0x0000000008D1F000-memory.dmp

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memory/3172-144-0x0000000008DB0000-0x0000000008F2B000-memory.dmp

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memory/3172-141-0x0000000008AF0000-0x0000000008C07000-memory.dmp

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