formbook | 61f7409c356d9376b580f156b4b775fb91aa34a4687642bc9c7f4673cffca0ca

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20220414-en
submitted
21/06/2022, 09:23

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General

Target
1.exe
Size 176KB
Sample220621-lcf2dsehf2
SHA256 61f7409c356d9376b580f156b4b775fb91aa34a4687642bc9c7f4673cffca0ca
MD5 509edfdb29a62b6e704548051f8288d7
SHA1 092709e1a4bdb9e154201f243faf7be0a6754806
SHA512 10f97e788c0753de73f47ce30eb0617d84db1731e3279aa96343ce7fbf77b6ae6b073a6fad3dfafd26bbf10928a0ce1daf35aa382d8d2b717d182aab235ee954
MD5 SHA1 SHA512

Score

10^/10

formbook xloader uniz loader persistence rat spyware stealer suricata trojan

Malware Config

Extracted

Family

xloader

Version

Campaign

uniz

Decoy

ZBCuBDslv1vmdg==
Tf0bKIL7UwC+XwBS
YQAj8CUa+qQn4NVV
c2VpeA0CV0kHeeq31nYPNgE=
Yhin8SpRfm1NbLm9nOThBw==
eyIn8RqE6k/h/YkDntqoMKVA
W/mS4B+Zbo6mZ6024Q==
96FIkNOqhgj5rKAYr7S/JxaIrKNEEg==
z4QXqB6NZViPQvPsHTgCGh6OaJ9DEAhD/Zw+pQ==
z3D/WJZrRZ9wJDa2GIMXEA==
sWh+QWdXHJePJ/l5/zU6iQNdX3UE
FL1V2Tmuv1vmdg==
IeL4/3li2MqV2ubg7g==
UPqU6i+W7FlT8Jizi83T
xFoDgOwNGwmcN0Q6GIMXEA==
M+T00gzvwwvEZnXypOfsKPBJzu70TAs=
JuD4/pF5R4qIiFWoGIMXEA==
fiy88SOceKo2PHU=
Tf+kJJDy0LB5sg7b73YPNgE=
952zrSIBT08QrIzqdJpPQ0Jq8yO1s2OpNg==
vGqbjAJmNjsNecfW5A==
xXWFQW9aJYU/unC/W3dfkGznxQius2OpNg==
+LZMxjQ3lGq5vQNH
rlj2kf1o11cwapC2ywM=
bh03DlEzFn5Czp8azBPkPTCEEg==
MtJfqdK/CQXKjJC2ywM=
yW6EkSH5TFwcZ6024Q==
tThlY824iu/oY6+BaOohnVV6Cw==
XwTpKqjUO7ygYQ==
kzLKWeZhLyg4MRv9F3YPNgE=
ax34PA3cv1vmdg==
YQ6g5zIXI3oiTZC2ywM=
WwmdObUhBuKv0CQURWhr11Njzu70TAs=
Ap2vxTYFWTLaln/yhdHrTtMbCXJLToAR
R/iF3CaGYHV6ibWSuNZxbv9dX3UE
+LhQjLmieAPK+I+NwN208TFdX3UE
38qqZJuO5K+rZ6024Q==
vlj5gOxDnSPqEomEpcmCfgNdX3UE
vmyTUHxhuouIg6iu1PW989dWLmAE2tUm/Zw+pQ==
bho190q3jJpQgyH6HTdDmQOJHw==
UhQw7Taff6o2PHU=
hkZVJlC6InU/+Oxa5QqoMKVA
cDNHWOPLk/benHUMntOwUdNZ
fSC9R7cZO7ygYQ==
o052dPbjvCv+Z6024Q==
H9vw7G9Qp4LVrLg/4w==
EMJFkMcvjO72nmezi83T
2JghriuL2VYUIpizi83T
6o+YbbhgbOXe
9Z26frKnOtnq9/nsAgjbDRwmwUk=
u2qGPmdrP7/WkDyeLFf4B6fSP5N49rK5OxgFHGxS
ROQB0BR/U0ENecfW5A==
XREl5xwZ4lAO0/HH+XYPNgE=
eTZMYNezgd9hQvFQ
H8Nn6nrYMo6YGbs6yxMdeQFdX3UE
Yxo1EEq1e6o2PHU=
/6Q6+Ccjv1vmdg==
/Ja4bnLOO7ygYQ==
Rd6GDG9g/KSy3Bj6AnYPNgE=
DqdIzEKvgqo2PHU=
246TZn9zN4sRHZWzi83T
35gmdpiLXaOmZ6024Q==
M9Z3/Y/1UK1hQvFQ
DcDR2EdBEGWs1RD8BXYPNgE=
senior-living-homes1.life

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 4 IoCs

rat

resource	yara_rule
behavioral2/memory/4644-137-0x0000000000340000-0x000000000036C000-memory.dmp	xloader
behavioral2/memory/4644-140-0x0000000000340000-0x000000000036C000-memory.dmp	xloader
behavioral2/files/0x0003000000000721-147.dat	xloader
behavioral2/files/0x0003000000000721-148.dat	xloader

Executes dropped EXE 1 IoCs

pid	Process
4928	chkdskp6ql.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-1-5-21-2632097139-1792035885-811742494-1000\Control Panel\International\Geo\Nation	1.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

Adds 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\WOW6432Node\Microsoft\Windows\CurrentVersion\Run	NETSTAT.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\XBML08-X = "C:\\Program Files (x86)\\Dqdf8\\chkdskp6ql.exe"	NETSTAT.EXE

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1088 set thread context of 3084	1088	1.exe	44
PID 4644 set thread context of 3084	4644	NETSTAT.EXE	44

Drops file in Program Files directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Dqdf8\chkdskp6ql.exe	NETSTAT.EXE
File opened for modification	C:\Program Files (x86)\Dqdf8	Explorer.EXE
File created	C:\Program Files (x86)\Dqdf8\chkdskp6ql.exe	Explorer.EXE
File opened for modification	C:\Program Files (x86)\Dqdf8\chkdskp6ql.exe	Explorer.EXE

Gathers network information 2 TTPs 1 IoCs

Uses commandline utility to view network configuration.

System Information Discovery

T1082

Command-Line Interface

T1059

pid	Process
4644	NETSTAT.EXE

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\Registry\User\S-1-5-21-2632097139-1792035885-811742494-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	NETSTAT.EXE

Suspicious behavior: EnumeratesProcesses 60 IoCs

pid	Process
1088	1.exe
1088	1.exe
1088	1.exe
1088	1.exe
4644	NETSTAT.EXE
4644	NETSTAT.EXE
4644	NETSTAT.EXE
4644	NETSTAT.EXE
4644	NETSTAT.EXE
4644	NETSTAT.EXE
4644	NETSTAT.EXE
4644	NETSTAT.EXE
4644	NETSTAT.EXE
4644	NETSTAT.EXE
4644	NETSTAT.EXE
4644	NETSTAT.EXE
4644	NETSTAT.EXE
4644	NETSTAT.EXE
4644	NETSTAT.EXE
4644	NETSTAT.EXE
4644	NETSTAT.EXE
4644	NETSTAT.EXE
4644	NETSTAT.EXE
4644	NETSTAT.EXE
4644	NETSTAT.EXE
4644	NETSTAT.EXE
4644	NETSTAT.EXE
4644	NETSTAT.EXE
4644	NETSTAT.EXE
4644	NETSTAT.EXE
4644	NETSTAT.EXE
4644	NETSTAT.EXE
4644	NETSTAT.EXE
4644	NETSTAT.EXE
4644	NETSTAT.EXE
4644	NETSTAT.EXE
4644	NETSTAT.EXE
4644	NETSTAT.EXE
4644	NETSTAT.EXE
4644	NETSTAT.EXE
4644	NETSTAT.EXE
4644	NETSTAT.EXE
4644	NETSTAT.EXE
4644	NETSTAT.EXE
4644	NETSTAT.EXE
4644	NETSTAT.EXE
4928	chkdskp6ql.exe
4928	chkdskp6ql.exe
4644	NETSTAT.EXE
4644	NETSTAT.EXE
4644	NETSTAT.EXE
4644	NETSTAT.EXE
4644	NETSTAT.EXE
4644	NETSTAT.EXE
4644	NETSTAT.EXE
4644	NETSTAT.EXE
4644	NETSTAT.EXE
4644	NETSTAT.EXE
4644	NETSTAT.EXE
4644	NETSTAT.EXE

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3084	Explorer.EXE

Suspicious behavior: MapViewOfSection 7 IoCs

pid	Process
1088	1.exe
1088	1.exe
1088	1.exe
4644	NETSTAT.EXE
4644	NETSTAT.EXE
4644	NETSTAT.EXE
4644	NETSTAT.EXE

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1088	1.exe
Token: SeDebugPrivilege	4644	NETSTAT.EXE
Token: SeDebugPrivilege	4928	chkdskp6ql.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 3084 wrote to memory of 4644	3084	Explorer.EXE	79
PID 3084 wrote to memory of 4644	3084	Explorer.EXE	79
PID 3084 wrote to memory of 4644	3084	Explorer.EXE	79
PID 4644 wrote to memory of 1988	4644	NETSTAT.EXE	80
PID 4644 wrote to memory of 1988	4644	NETSTAT.EXE	80
PID 4644 wrote to memory of 1988	4644	NETSTAT.EXE	80
PID 4644 wrote to memory of 3992	4644	NETSTAT.EXE	89
PID 4644 wrote to memory of 3992	4644	NETSTAT.EXE	89
PID 4644 wrote to memory of 3992	4644	NETSTAT.EXE	89
PID 4644 wrote to memory of 2960	4644	NETSTAT.EXE	91
PID 4644 wrote to memory of 2960	4644	NETSTAT.EXE	91
PID 4644 wrote to memory of 2960	4644	NETSTAT.EXE	91
PID 4644 wrote to memory of 4448	4644	NETSTAT.EXE	93
PID 4644 wrote to memory of 4448	4644	NETSTAT.EXE	93
PID 4644 wrote to memory of 4448	4644	NETSTAT.EXE	93
PID 3084 wrote to memory of 4928	3084	Explorer.EXE	94
PID 3084 wrote to memory of 4928	3084	Explorer.EXE	94
PID 3084 wrote to memory of 4928	3084	Explorer.EXE	94

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Drops file in Program Files directory
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:3084
- C:\Users\Admin\AppData\Local\Temp\1.exe
  "C:\Users\Admin\AppData\Local\Temp\1.exe"
  2⤵
  - Checks computer location settings
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  PID:1088
- C:\Windows\SysWOW64\NETSTAT.EXE
  "C:\Windows\SysWOW64\NETSTAT.EXE"
  2⤵
  - Adds Run key to start application
  - Suspicious use of SetThreadContext
  - Drops file in Program Files directory
  - Gathers network information
  - Modifies Internet Explorer settings
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4644
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\1.exe"
    3⤵
    PID:1988
- - 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:3992
- - 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:2960
- - C:\Program Files\Mozilla Firefox\Firefox.exe
    "C:\Program Files\Mozilla Firefox\Firefox.exe"
    3⤵
    PID:4448
- C:\Program Files (x86)\Dqdf8\chkdskp6ql.exe
  "C:\Program Files (x86)\Dqdf8\chkdskp6ql.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4928

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Command-Line Interface

T1059

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

chkdskp6ql.exe

Path C:\Program Files (x86)\Dqdf8\chkdskp6ql.exe
Size 176KB
SHA256 61f7409c356d9376b580f156b4b775fb91aa34a4687642bc9c7f4673cffca0ca
MD5 509edfdb29a62b6e704548051f8288d7
SHA1 092709e1a4bdb9e154201f243faf7be0a6754806
SHA512 10f97e788c0753de73f47ce30eb0617d84db1731e3279aa96343ce7fbf77b6ae6b073a6fad3dfafd26bbf10928a0ce1daf35aa382d8d2b717d182aab235ee954
SSDEEP 3072:dlzBiEl8bwtqf91QSZ4sW/VbamSoSGXQxXvXWGn2GXhSm4hTZ/ZRWU5eazM:dV9lqP134WmfvXU/XWGn2GRSjtBk
MD5 SHA1 SHA512 SSDEEP

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chkdskp6ql.exe

Path C:\Program Files (x86)\Dqdf8\chkdskp6ql.exe
Size 176KB
SHA256 61f7409c356d9376b580f156b4b775fb91aa34a4687642bc9c7f4673cffca0ca
MD5 509edfdb29a62b6e704548051f8288d7
SHA1 092709e1a4bdb9e154201f243faf7be0a6754806
SHA512 10f97e788c0753de73f47ce30eb0617d84db1731e3279aa96343ce7fbf77b6ae6b073a6fad3dfafd26bbf10928a0ce1daf35aa382d8d2b717d182aab235ee954
SSDEEP 3072:dlzBiEl8bwtqf91QSZ4sW/VbamSoSGXQxXvXWGn2GXhSm4hTZ/ZRWU5eazM:dV9lqP134WmfvXU/XWGn2GRSjtBk
MD5 SHA1 SHA512 SSDEEP

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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/1088-131-0x00000000015F0000-0x0000000001601000-memory.dmp

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memory/1088-130-0x00000000010F0000-0x000000000143A000-memory.dmp

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memory/3084-132-0x0000000002B10000-0x0000000002C5B000-memory.dmp

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memory/3084-139-0x0000000002E00000-0x0000000002EC4000-memory.dmp

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memory/3084-141-0x0000000002E00000-0x0000000002EC4000-memory.dmp

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memory/4644-136-0x0000000000E30000-0x000000000117A000-memory.dmp

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memory/4644-140-0x0000000000340000-0x000000000036C000-memory.dmp

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memory/4644-138-0x0000000000B50000-0x0000000000BE0000-memory.dmp

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memory/4644-137-0x0000000000340000-0x000000000036C000-memory.dmp

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memory/4644-135-0x00000000003D0000-0x00000000003DB000-memory.dmp

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memory/4928-149-0x00000000018C0000-0x0000000001C0A000-memory.dmp

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