formbook | 37fc27ae593c57c90608af9929d7ade4fc5924ec4e795c445c4bf8a5a1bf8585

General

Target

file.exe
Size

225KB
MD5

3359916b838254bede2336070d99b6e5
SHA1

ae40ca0d6b91624cd8d9ef1b30e1ce2338c3309f
SHA256

37fc27ae593c57c90608af9929d7ade4fc5924ec4e795c445c4bf8a5a1bf8585
SHA512

989e405e72f4be4abcca21e8b8cb84b37165e00a88a13f3186801f0f64be8c6a7e70d069e69dfb58f71622a6b41b5c9a93d20279e4a3c580f3e2f488d59a7406
SSDEEP

3072:qUJoFfWzzl+cSM2wPddXssJXKAI95ibwrhlikpXbeK3eMmR6M3vcJLSmKqcHKrF+:qweEp2KjV5IDiErh7bNmv0JLlcHKrF+T

Score

10^/10

formbook f4ca rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Campaign

f4ca

Decoy

omFHB5ajfJi1UEIEV9XcoRw=

UBjJkmQPyprdhcFF/bdCWQ==

evGKkBUj1je+otcfpw==

KgvGVeOATSt3nug0BIOm2JvOQycB

Lv6o3K0r9aSjI0lr9fg1txw=

LH1jJb/HieQpsEdqWCQTvX2PmsDVIeg=

99dte0XauJfk6Xv+uQxJFgA1gMktBA==

21FkkGB9gMniDQw2ffu6

r4lKBM/q6TZwVZfS

F+14qHeVWi56KdQ=

BgWXRsVoICMvvQ==

I+EozFl0Uy56KdQ=

xoXCgEllKEbWfjFCCLo=

qo9G1lXvvGt5GkxrLQWw

ORNlYic0PJ2ip4geEFSv

Yj+GFpvFxy0uVYx1fLI/XQ==

XL+veIKPjOTe4fjvFs+n

D2JKVAfuakXCAyoEvw==

voWJU81tH56wvt/vImbCcgVd

dVEcwFrmb8bZ4vXvFs+n

Signatures

Formbook
Formbook is a data stealing malware which is capable of stealing data.
trojan spyware stealer formbook
Blocklisted process makes network request 1 IoCs

Processes:

rundll32.exe

flow pid process

8 860 rundll32.exe
Executes dropped EXE 2 IoCs

Processes:

xxrkypy.exexxrkypy.exe

pid process

2000 xxrkypy.exe
1112 xxrkypy.exe

flow	pid	process
8	860	rundll32.exe

pid	process
2000	xxrkypy.exe
1112	xxrkypy.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

Processes:

xxrkypy.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Control Panel\International\Geo\Nation	xxrkypy.exe

Loads dropped DLL 3 IoCs

Processes:

file.exexxrkypy.exerundll32.exe

pid process

1912 file.exe
2000 xxrkypy.exe
860 rundll32.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

pid	process
1912	file.exe
2000	xxrkypy.exe
860	rundll32.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

xxrkypy.exexxrkypy.exerundll32.exe

description	pid	process	target process
PID 2000 set thread context of 1112	2000	xxrkypy.exe	xxrkypy.exe
PID 1112 set thread context of 1256	1112	xxrkypy.exe	Explorer.EXE
PID 860 set thread context of 1256	860	rundll32.exe	Explorer.EXE

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

Processes:

rundll32.exe

description	ioc	process
Key created	\Registry\User\S-1-5-21-2292972927-2705560509-2768824231-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	rundll32.exe

Suspicious behavior: EnumeratesProcesses 26 IoCs

Processes:

xxrkypy.exerundll32.exe

pid	process
1112	xxrkypy.exe
1112	xxrkypy.exe
1112	xxrkypy.exe
1112	xxrkypy.exe
860	rundll32.exe
860	rundll32.exe
860	rundll32.exe
860	rundll32.exe
860	rundll32.exe
860	rundll32.exe
860	rundll32.exe
860	rundll32.exe
860	rundll32.exe
860	rundll32.exe
860	rundll32.exe
860	rundll32.exe
860	rundll32.exe
860	rundll32.exe
860	rundll32.exe
860	rundll32.exe
860	rundll32.exe
860	rundll32.exe
860	rundll32.exe
860	rundll32.exe
860	rundll32.exe
860	rundll32.exe

Suspicious behavior: MapViewOfSection 8 IoCs

Processes:

xxrkypy.exexxrkypy.exerundll32.exe

pid process

2000 xxrkypy.exe
1112 xxrkypy.exe
1112 xxrkypy.exe
1112 xxrkypy.exe
860 rundll32.exe
860 rundll32.exe
860 rundll32.exe
860 rundll32.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

xxrkypy.exerundll32.exe

description pid process

Token: SeDebugPrivilege 1112 xxrkypy.exe
Token: SeDebugPrivilege 860 rundll32.exe
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

Explorer.EXE

pid process

1256 Explorer.EXE
1256 Explorer.EXE
Suspicious use of SendNotifyMessage 2 IoCs

Processes:

Explorer.EXE

pid process

1256 Explorer.EXE
1256 Explorer.EXE

pid	process
2000	xxrkypy.exe
1112	xxrkypy.exe
1112	xxrkypy.exe
1112	xxrkypy.exe
860	rundll32.exe
860	rundll32.exe
860	rundll32.exe
860	rundll32.exe

description	pid	process
Token: SeDebugPrivilege	1112	xxrkypy.exe
Token: SeDebugPrivilege	860	rundll32.exe

pid	process
1256	Explorer.EXE
1256	Explorer.EXE

pid	process
1256	Explorer.EXE
1256	Explorer.EXE

Suspicious use of WriteProcessMemory 21 IoCs

Processes:

file.exexxrkypy.exeExplorer.EXErundll32.exe

description	pid	process	target process
PID 1912 wrote to memory of 2000	1912	file.exe	xxrkypy.exe
PID 1912 wrote to memory of 2000	1912	file.exe	xxrkypy.exe
PID 1912 wrote to memory of 2000	1912	file.exe	xxrkypy.exe
PID 1912 wrote to memory of 2000	1912	file.exe	xxrkypy.exe
PID 2000 wrote to memory of 1112	2000	xxrkypy.exe	xxrkypy.exe
PID 2000 wrote to memory of 1112	2000	xxrkypy.exe	xxrkypy.exe
PID 2000 wrote to memory of 1112	2000	xxrkypy.exe	xxrkypy.exe
PID 2000 wrote to memory of 1112	2000	xxrkypy.exe	xxrkypy.exe
PID 2000 wrote to memory of 1112	2000	xxrkypy.exe	xxrkypy.exe
PID 1256 wrote to memory of 860	1256	Explorer.EXE	rundll32.exe
PID 1256 wrote to memory of 860	1256	Explorer.EXE	rundll32.exe
PID 1256 wrote to memory of 860	1256	Explorer.EXE	rundll32.exe
PID 1256 wrote to memory of 860	1256	Explorer.EXE	rundll32.exe
PID 1256 wrote to memory of 860	1256	Explorer.EXE	rundll32.exe
PID 1256 wrote to memory of 860	1256	Explorer.EXE	rundll32.exe
PID 1256 wrote to memory of 860	1256	Explorer.EXE	rundll32.exe
PID 860 wrote to memory of 1988	860	rundll32.exe	Firefox.exe
PID 860 wrote to memory of 1988	860	rundll32.exe	Firefox.exe
PID 860 wrote to memory of 1988	860	rundll32.exe	Firefox.exe
PID 860 wrote to memory of 1988	860	rundll32.exe	Firefox.exe
PID 860 wrote to memory of 1988	860	rundll32.exe	Firefox.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1256

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
2⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1912

C:\Users\Admin\AppData\Local\Temp\xxrkypy.exe
"C:\Users\Admin\AppData\Local\Temp\xxrkypy.exe"
3⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:2000

C:\Users\Admin\AppData\Local\Temp\xxrkypy.exe
"C:\Users\Admin\AppData\Local\Temp\xxrkypy.exe"
4⤵
- Executes dropped EXE
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:1112

C:\Windows\SysWOW64\rundll32.exe
"C:\Windows\SysWOW64\rundll32.exe"
2⤵
- Blocklisted process makes network request
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Modifies Internet Explorer settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:860

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:1988

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Credentials in Files

1

T1081

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\uygpu.qh
Filesize
5KB

MD5
8e97c83dc389c1fa5dc9cdceacf4d4b5

SHA1
4c143609bfea2efba4aedcdc7e31fc53e1ecd94c

SHA256
008753e08eb498464a40205664506c9f18098b67fbcabafd873aeded7ad44425

SHA512
fe99141853e49ef0a1d893667770f26ea13c344dc6b7a43cbc23cd441a8fdbdd704a25dcfe7533c65792c8a1bc93f792a460490fbf79fe465dd528244f59e415

Download Submit
C:\Users\Admin\AppData\Local\Temp\uzqdeuvsss.y
Filesize
185KB

MD5
000956d9b032dd95819bf1da8acdfa35

SHA1
cc84b73cbca09be962fc20203017706459f757a3

SHA256
eb97119a88606e5e8cdae66a53b8fe44c3143b0f629ea54e4ca0103aeb121535

SHA512
d6dedd8852bd63f8eef55c7070fbd851c58d647be359a005bf801dc702c34abafc2275e9c28371431967763d948b95328a1cee94fb7652bf832cea2a2651aebd

Download Submit
C:\Users\Admin\AppData\Local\Temp\xxrkypy.exe
Filesize
5KB

MD5
818e4839cf473064fde652fb001fcce6

SHA1
b051185eddc6992bd0b4092e338ed067487af57a

SHA256
72eefcdcbb8c9510a83e9ce80810d84688416ede5d4041aee4944f04b7cb903b

SHA512
9b8aa6a9ef6d125f80ef555429d45e970f873440d95ac8f687a2ff782d46fdf71c8b66d351010346b989fbeb74f815e96b774a6c463aa9e974399e9a67e50c06

Download Submit
C:\Users\Admin\AppData\Local\Temp\xxrkypy.exe
Filesize
5KB

MD5
818e4839cf473064fde652fb001fcce6

SHA1
b051185eddc6992bd0b4092e338ed067487af57a

SHA256
72eefcdcbb8c9510a83e9ce80810d84688416ede5d4041aee4944f04b7cb903b

SHA512
9b8aa6a9ef6d125f80ef555429d45e970f873440d95ac8f687a2ff782d46fdf71c8b66d351010346b989fbeb74f815e96b774a6c463aa9e974399e9a67e50c06

Download Submit
C:\Users\Admin\AppData\Local\Temp\xxrkypy.exe
Filesize
5KB

MD5
818e4839cf473064fde652fb001fcce6

SHA1
b051185eddc6992bd0b4092e338ed067487af57a

SHA256
72eefcdcbb8c9510a83e9ce80810d84688416ede5d4041aee4944f04b7cb903b

SHA512
9b8aa6a9ef6d125f80ef555429d45e970f873440d95ac8f687a2ff782d46fdf71c8b66d351010346b989fbeb74f815e96b774a6c463aa9e974399e9a67e50c06

Download Submit
\Users\Admin\AppData\Local\Temp\sqlite3.dll
Filesize
902KB

MD5
50338cc1fa2582fa0cad8a8fa7ceb4d2

SHA1
ae697ef05b6bec38fb79ff4512ae50a303dcdbce

SHA256
0815a80fa73286d8c6bf0982471c61833821d9f10a20612deaa134562e7a3cda

SHA512
02a006e26b1d08cb53a4b3dab23ce6a6756a7275f8b3ef00b7412f10cff75411685a3542c5dc330dad7c9f7ff26288a2e94254d00bf53c1394e7252e000c9a61

Download Submit
\Users\Admin\AppData\Local\Temp\xxrkypy.exe
Filesize
5KB

MD5
818e4839cf473064fde652fb001fcce6

SHA1
b051185eddc6992bd0b4092e338ed067487af57a

SHA256
72eefcdcbb8c9510a83e9ce80810d84688416ede5d4041aee4944f04b7cb903b

SHA512
9b8aa6a9ef6d125f80ef555429d45e970f873440d95ac8f687a2ff782d46fdf71c8b66d351010346b989fbeb74f815e96b774a6c463aa9e974399e9a67e50c06

Download Submit
\Users\Admin\AppData\Local\Temp\xxrkypy.exe
Filesize
5KB

MD5
818e4839cf473064fde652fb001fcce6

SHA1
b051185eddc6992bd0b4092e338ed067487af57a

SHA256
72eefcdcbb8c9510a83e9ce80810d84688416ede5d4041aee4944f04b7cb903b

SHA512
9b8aa6a9ef6d125f80ef555429d45e970f873440d95ac8f687a2ff782d46fdf71c8b66d351010346b989fbeb74f815e96b774a6c463aa9e974399e9a67e50c06

Download Submit
memory/860-74-0x0000000001F70000-0x0000000002273000-memory.dmp

Filesize
3.0MB

Download
memory/860-70-0x0000000000000000-mapping.dmp

Download
memory/860-77-0x00000000000D0000-0x00000000000FD000-memory.dmp

Filesize
180KB

Download
memory/860-75-0x00000000009C0000-0x0000000000A4F000-memory.dmp

Filesize
572KB

Download
memory/860-72-0x0000000000160000-0x000000000016E000-memory.dmp

Filesize
56KB

Download
memory/860-73-0x00000000000D0000-0x00000000000FD000-memory.dmp

Filesize
180KB

Download
memory/1112-67-0x0000000000700000-0x0000000000A03000-memory.dmp

Filesize
3.0MB

Download
memory/1112-68-0x00000000001C0000-0x00000000001D0000-memory.dmp

Filesize
64KB

Download
memory/1112-63-0x00000000004012B0-mapping.dmp

Download
memory/1112-66-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1112-65-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1256-69-0x0000000004980000-0x0000000004AA7000-memory.dmp

Filesize
1.2MB

Download
memory/1256-76-0x0000000006550000-0x0000000006626000-memory.dmp

Filesize
856KB

Download
memory/1256-78-0x0000000006550000-0x0000000006626000-memory.dmp

Filesize
856KB

Download
memory/1912-54-0x00000000763F1000-0x00000000763F3000-memory.dmp

Filesize
8KB

Download
memory/2000-56-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads