formbook | 37fc27ae593c57c90608af9929d7ade4fc5924ec4e795c445c4bf8a5a1bf8585

Analysis

max time kernel
150s
max time network
153s
platform
windows10-1703_x64
resource
win10-20220901-en
resource tags

arch:x64arch:x86image:win10-20220901-enlocale:en-usos:windows10-1703-x64system
submitted
28-10-2022 18:07

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General

Target

37fc27ae593c57c90608af9929d7ade4fc5924ec4e795c445c4bf8a5a1bf8585.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
Executes dropped EXE 2 IoCs

Processes:

xxrkypy.exexxrkypy.exe

pid process

3572 xxrkypy.exe
1012 xxrkypy.exe

pid	process
3572	xxrkypy.exe
1012	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-1-5-21-2368682536-4045190062-1465778271-1000\Control Panel\International\Geo\Nation	xxrkypy.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

xxrkypy.exexxrkypy.execontrol.exe

description	pid	process	target process
PID 3572 set thread context of 1012	3572	xxrkypy.exe	xxrkypy.exe
PID 1012 set thread context of 3064	1012	xxrkypy.exe	Explorer.EXE
PID 536 set thread context of 3064	536	control.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:

control.exe

description	ioc	process
Key created	\Registry\User\S-1-5-21-2368682536-4045190062-1465778271-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	control.exe

Suspicious behavior: EnumeratesProcesses 60 IoCs

Processes:

xxrkypy.execontrol.exe

pid	process
1012	xxrkypy.exe
1012	xxrkypy.exe
1012	xxrkypy.exe
1012	xxrkypy.exe
1012	xxrkypy.exe
1012	xxrkypy.exe
1012	xxrkypy.exe
1012	xxrkypy.exe
536	control.exe
536	control.exe
536	control.exe
536	control.exe
536	control.exe
536	control.exe
536	control.exe
536	control.exe
536	control.exe
536	control.exe
536	control.exe
536	control.exe
536	control.exe
536	control.exe
536	control.exe
536	control.exe
536	control.exe
536	control.exe
536	control.exe
536	control.exe
536	control.exe
536	control.exe
536	control.exe
536	control.exe
536	control.exe
536	control.exe
536	control.exe
536	control.exe
536	control.exe
536	control.exe
536	control.exe
536	control.exe
536	control.exe
536	control.exe
536	control.exe
536	control.exe
536	control.exe
536	control.exe
536	control.exe
536	control.exe
536	control.exe
536	control.exe
536	control.exe
536	control.exe
536	control.exe
536	control.exe
536	control.exe
536	control.exe
536	control.exe
536	control.exe
536	control.exe
536	control.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

3064 Explorer.EXE
Suspicious behavior: MapViewOfSection 8 IoCs

Processes:

xxrkypy.exexxrkypy.execontrol.exe

pid process

3572 xxrkypy.exe
1012 xxrkypy.exe
1012 xxrkypy.exe
1012 xxrkypy.exe
536 control.exe
536 control.exe
536 control.exe
536 control.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

xxrkypy.execontrol.exe

description pid process

Token: SeDebugPrivilege 1012 xxrkypy.exe
Token: SeDebugPrivilege 536 control.exe

pid	process
3064	Explorer.EXE

pid	process
3572	xxrkypy.exe
1012	xxrkypy.exe
1012	xxrkypy.exe
1012	xxrkypy.exe
536	control.exe
536	control.exe
536	control.exe
536	control.exe

description	pid	process
Token: SeDebugPrivilege	1012	xxrkypy.exe
Token: SeDebugPrivilege	536	control.exe

Suspicious use of WriteProcessMemory 13 IoCs

Processes:

37fc27ae593c57c90608af9929d7ade4fc5924ec4e795c445c4bf8a5a1bf8585.exexxrkypy.exeExplorer.EXEcontrol.exe

description	pid	process	target process
PID 2108 wrote to memory of 3572	2108	37fc27ae593c57c90608af9929d7ade4fc5924ec4e795c445c4bf8a5a1bf8585.exe	xxrkypy.exe
PID 2108 wrote to memory of 3572	2108	37fc27ae593c57c90608af9929d7ade4fc5924ec4e795c445c4bf8a5a1bf8585.exe	xxrkypy.exe
PID 2108 wrote to memory of 3572	2108	37fc27ae593c57c90608af9929d7ade4fc5924ec4e795c445c4bf8a5a1bf8585.exe	xxrkypy.exe
PID 3572 wrote to memory of 1012	3572	xxrkypy.exe	xxrkypy.exe
PID 3572 wrote to memory of 1012	3572	xxrkypy.exe	xxrkypy.exe
PID 3572 wrote to memory of 1012	3572	xxrkypy.exe	xxrkypy.exe
PID 3572 wrote to memory of 1012	3572	xxrkypy.exe	xxrkypy.exe
PID 3064 wrote to memory of 536	3064	Explorer.EXE	control.exe
PID 3064 wrote to memory of 536	3064	Explorer.EXE	control.exe
PID 3064 wrote to memory of 536	3064	Explorer.EXE	control.exe
PID 536 wrote to memory of 4080	536	control.exe	Firefox.exe
PID 536 wrote to memory of 4080	536	control.exe	Firefox.exe
PID 536 wrote to memory of 4080	536	control.exe	Firefox.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:3064

C:\Users\Admin\AppData\Local\Temp\37fc27ae593c57c90608af9929d7ade4fc5924ec4e795c445c4bf8a5a1bf8585.exe
"C:\Users\Admin\AppData\Local\Temp\37fc27ae593c57c90608af9929d7ade4fc5924ec4e795c445c4bf8a5a1bf8585.exe"
2⤵
- Suspicious use of WriteProcessMemory
PID:2108

C:\Users\Admin\AppData\Local\Temp\xxrkypy.exe
"C:\Users\Admin\AppData\Local\Temp\xxrkypy.exe"
3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:3572

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:1012

C:\Windows\SysWOW64\control.exe
"C:\Windows\SysWOW64\control.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:536

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:4080

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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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
memory/536-263-0x00000000045F0000-0x0000000004910000-memory.dmp

Filesize
3.1MB

Download
memory/536-267-0x0000000000370000-0x000000000039D000-memory.dmp

Filesize
180KB

Download
memory/536-265-0x00000000042B0000-0x0000000004443000-memory.dmp

Filesize
1.6MB

Download
memory/536-268-0x00000000042B0000-0x0000000004443000-memory.dmp

Filesize
1.6MB

Download
memory/536-262-0x0000000000370000-0x000000000039D000-memory.dmp

Filesize
180KB

Download
memory/536-261-0x0000000000E90000-0x0000000000EB0000-memory.dmp

Filesize
128KB

Download
memory/536-231-0x0000000000000000-mapping.dmp

Download
memory/1012-233-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1012-229-0x00000000001D0000-0x00000000001E0000-memory.dmp

Filesize
64KB

Download
memory/1012-228-0x0000000000980000-0x0000000000CA0000-memory.dmp

Filesize
3.1MB

Download
memory/1012-212-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1012-205-0x00000000004012B0-mapping.dmp

Download
memory/2108-157-0x00000000779E0000-0x0000000077B6E000-memory.dmp

Filesize
1.6MB

Download
memory/2108-153-0x00000000779E0000-0x0000000077B6E000-memory.dmp

Filesize
1.6MB

Download
memory/2108-134-0x00000000779E0000-0x0000000077B6E000-memory.dmp

Filesize
1.6MB

Download
memory/2108-135-0x00000000779E0000-0x0000000077B6E000-memory.dmp

Filesize
1.6MB

Download
memory/2108-136-0x00000000779E0000-0x0000000077B6E000-memory.dmp

Filesize
1.6MB

Download
memory/2108-137-0x00000000779E0000-0x0000000077B6E000-memory.dmp

Filesize
1.6MB

Download
memory/2108-138-0x00000000779E0000-0x0000000077B6E000-memory.dmp

Filesize
1.6MB

Download
memory/2108-139-0x00000000779E0000-0x0000000077B6E000-memory.dmp

Filesize
1.6MB

Download
memory/2108-140-0x00000000779E0000-0x0000000077B6E000-memory.dmp

Filesize
1.6MB

Download
memory/2108-141-0x00000000779E0000-0x0000000077B6E000-memory.dmp

Filesize
1.6MB

Download
memory/2108-142-0x00000000779E0000-0x0000000077B6E000-memory.dmp

Filesize
1.6MB

Download
memory/2108-143-0x00000000779E0000-0x0000000077B6E000-memory.dmp

Filesize
1.6MB

Download
memory/2108-144-0x00000000779E0000-0x0000000077B6E000-memory.dmp

Filesize
1.6MB

Download
memory/2108-145-0x00000000779E0000-0x0000000077B6E000-memory.dmp

Filesize
1.6MB

Download
memory/2108-146-0x00000000779E0000-0x0000000077B6E000-memory.dmp

Filesize
1.6MB

Download
memory/2108-148-0x00000000779E0000-0x0000000077B6E000-memory.dmp

Filesize
1.6MB

Download
memory/2108-147-0x00000000779E0000-0x0000000077B6E000-memory.dmp

Filesize
1.6MB

Download
memory/2108-149-0x00000000779E0000-0x0000000077B6E000-memory.dmp

Filesize
1.6MB

Download
memory/2108-150-0x00000000779E0000-0x0000000077B6E000-memory.dmp

Filesize
1.6MB

Download
memory/2108-151-0x00000000779E0000-0x0000000077B6E000-memory.dmp

Filesize
1.6MB

Download
memory/2108-152-0x00000000779E0000-0x0000000077B6E000-memory.dmp

Filesize
1.6MB

Download
memory/2108-131-0x00000000779E0000-0x0000000077B6E000-memory.dmp

Filesize
1.6MB

Download
memory/2108-154-0x00000000779E0000-0x0000000077B6E000-memory.dmp

Filesize
1.6MB

Download
memory/2108-155-0x00000000779E0000-0x0000000077B6E000-memory.dmp

Filesize
1.6MB

Download
memory/2108-156-0x00000000779E0000-0x0000000077B6E000-memory.dmp

Filesize
1.6MB

Download
memory/2108-132-0x00000000779E0000-0x0000000077B6E000-memory.dmp

Filesize
1.6MB

Download
memory/2108-158-0x00000000779E0000-0x0000000077B6E000-memory.dmp

Filesize
1.6MB

Download
memory/2108-159-0x00000000779E0000-0x0000000077B6E000-memory.dmp

Filesize
1.6MB

Download
memory/2108-160-0x00000000779E0000-0x0000000077B6E000-memory.dmp

Filesize
1.6MB

Download
memory/2108-130-0x00000000779E0000-0x0000000077B6E000-memory.dmp

Filesize
1.6MB

Download
memory/2108-120-0x00000000779E0000-0x0000000077B6E000-memory.dmp

Filesize
1.6MB

Download
memory/2108-121-0x00000000779E0000-0x0000000077B6E000-memory.dmp

Filesize
1.6MB

Download
memory/2108-126-0x00000000779E0000-0x0000000077B6E000-memory.dmp

Filesize
1.6MB

Download
memory/2108-133-0x00000000779E0000-0x0000000077B6E000-memory.dmp

Filesize
1.6MB

Download
memory/2108-122-0x00000000779E0000-0x0000000077B6E000-memory.dmp

Filesize
1.6MB

Download
memory/2108-123-0x00000000779E0000-0x0000000077B6E000-memory.dmp

Filesize
1.6MB

Download
memory/2108-124-0x00000000779E0000-0x0000000077B6E000-memory.dmp

Filesize
1.6MB

Download
memory/2108-125-0x00000000779E0000-0x0000000077B6E000-memory.dmp

Filesize
1.6MB

Download
memory/2108-127-0x00000000779E0000-0x0000000077B6E000-memory.dmp

Filesize
1.6MB

Download
memory/2108-128-0x00000000779E0000-0x0000000077B6E000-memory.dmp

Filesize
1.6MB

Download
memory/2108-129-0x00000000779E0000-0x0000000077B6E000-memory.dmp

Filesize
1.6MB

Download
memory/3064-230-0x0000000005590000-0x000000000572C000-memory.dmp

Filesize
1.6MB

Download
memory/3064-266-0x0000000002E70000-0x0000000002F95000-memory.dmp

Filesize
1.1MB

Download
memory/3064-269-0x0000000002E70000-0x0000000002F95000-memory.dmp

Filesize
1.1MB

Download
memory/3572-166-0x00000000779E0000-0x0000000077B6E000-memory.dmp

Filesize
1.6MB

Download
memory/3572-179-0x00000000779E0000-0x0000000077B6E000-memory.dmp

Filesize
1.6MB

Download
memory/3572-180-0x00000000779E0000-0x0000000077B6E000-memory.dmp

Filesize
1.6MB

Download
memory/3572-181-0x00000000779E0000-0x0000000077B6E000-memory.dmp

Filesize
1.6MB

Download
memory/3572-182-0x00000000779E0000-0x0000000077B6E000-memory.dmp

Filesize
1.6MB

Download
memory/3572-183-0x00000000779E0000-0x0000000077B6E000-memory.dmp

Filesize
1.6MB

Download
memory/3572-178-0x00000000779E0000-0x0000000077B6E000-memory.dmp

Filesize
1.6MB

Download
memory/3572-177-0x00000000779E0000-0x0000000077B6E000-memory.dmp

Filesize
1.6MB

Download
memory/3572-176-0x00000000779E0000-0x0000000077B6E000-memory.dmp

Filesize
1.6MB

Download
memory/3572-175-0x00000000779E0000-0x0000000077B6E000-memory.dmp

Filesize
1.6MB

Download
memory/3572-174-0x00000000779E0000-0x0000000077B6E000-memory.dmp

Filesize
1.6MB

Download
memory/3572-173-0x00000000779E0000-0x0000000077B6E000-memory.dmp

Filesize
1.6MB

Download
memory/3572-172-0x00000000779E0000-0x0000000077B6E000-memory.dmp

Filesize
1.6MB

Download
memory/3572-171-0x00000000779E0000-0x0000000077B6E000-memory.dmp

Filesize
1.6MB

Download
memory/3572-170-0x00000000779E0000-0x0000000077B6E000-memory.dmp

Filesize
1.6MB

Download
memory/3572-168-0x00000000779E0000-0x0000000077B6E000-memory.dmp

Filesize
1.6MB

Download
memory/3572-167-0x00000000779E0000-0x0000000077B6E000-memory.dmp

Filesize
1.6MB

Download
memory/3572-165-0x00000000779E0000-0x0000000077B6E000-memory.dmp

Filesize
1.6MB

Download
memory/3572-164-0x00000000779E0000-0x0000000077B6E000-memory.dmp

Filesize
1.6MB

Download
memory/3572-163-0x00000000779E0000-0x0000000077B6E000-memory.dmp

Filesize
1.6MB

Download
memory/3572-161-0x0000000000000000-mapping.dmp

Download
memory/3572-184-0x00000000779E0000-0x0000000077B6E000-memory.dmp

Filesize
1.6MB

Download
memory/3572-185-0x00000000779E0000-0x0000000077B6E000-memory.dmp

Filesize
1.6MB

Download
memory/3572-186-0x00000000779E0000-0x0000000077B6E000-memory.dmp

Filesize
1.6MB

Download