formbook | b9f158fac329391c893814424e77c4f9fc0460026b93327d8cf35598a561a1de

Analysis

max time kernel
150s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20220901-en
resource tags

arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
submitted
31-01-2023 05:12

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General

Target

b85bcfc355d32617c12a2e71d4f80880.exe
Size

271KB
MD5

b85bcfc355d32617c12a2e71d4f80880
SHA1

8f5e2fcc9006bdbdcab9b6e15893b781fb893775
SHA256

b9f158fac329391c893814424e77c4f9fc0460026b93327d8cf35598a561a1de
SHA512

90874f7c64abd954ec34b4152dee1562cb55af65916e854dcf9c52f4be0270ff71c3fe57f0466f7dc18ce49c5cface4b5818df355a847bba5a4c982721b56bd5
SSDEEP

6144:QBn1vvXZCzNhTIyD2bE8Nf7B0AxHklinnqPazURP3gawRwcV:gv+m/NDB0AxHklinnqPai3gdScV

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:

ymloqhw.exeymloqhw.exe

pid process

4880 ymloqhw.exe
4976 ymloqhw.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:

ymloqhw.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation ymloqhw.exe

pid	process
4880	ymloqhw.exe
4976	ymloqhw.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation	ymloqhw.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

ymloqhw.exeymloqhw.exehelp.exe

description	pid	process	target process
PID 4880 set thread context of 4976	4880	ymloqhw.exe	ymloqhw.exe
PID 4976 set thread context of 2056	4976	ymloqhw.exe	Explorer.EXE
PID 1476 set thread context of 2056	1476	help.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:

help.exe

description	ioc	process
Key created	\Registry\User\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	help.exe

Suspicious behavior: EnumeratesProcesses 62 IoCs

Processes:

ymloqhw.exehelp.exe

pid	process
4976	ymloqhw.exe
4976	ymloqhw.exe
4976	ymloqhw.exe
4976	ymloqhw.exe
4976	ymloqhw.exe
4976	ymloqhw.exe
4976	ymloqhw.exe
4976	ymloqhw.exe
1476	help.exe
1476	help.exe
1476	help.exe
1476	help.exe
1476	help.exe
1476	help.exe
1476	help.exe
1476	help.exe
1476	help.exe
1476	help.exe
1476	help.exe
1476	help.exe
1476	help.exe
1476	help.exe
1476	help.exe
1476	help.exe
1476	help.exe
1476	help.exe
1476	help.exe
1476	help.exe
1476	help.exe
1476	help.exe
1476	help.exe
1476	help.exe
1476	help.exe
1476	help.exe
1476	help.exe
1476	help.exe
1476	help.exe
1476	help.exe
1476	help.exe
1476	help.exe
1476	help.exe
1476	help.exe
1476	help.exe
1476	help.exe
1476	help.exe
1476	help.exe
1476	help.exe
1476	help.exe
1476	help.exe
1476	help.exe
1476	help.exe
1476	help.exe
1476	help.exe
1476	help.exe
1476	help.exe
1476	help.exe
1476	help.exe
1476	help.exe
1476	help.exe
1476	help.exe
1476	help.exe
1476	help.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

2056 Explorer.EXE
Suspicious behavior: MapViewOfSection 9 IoCs

Processes:

ymloqhw.exeymloqhw.exehelp.exe

pid process

4880 ymloqhw.exe
4880 ymloqhw.exe
4976 ymloqhw.exe
4976 ymloqhw.exe
4976 ymloqhw.exe
1476 help.exe
1476 help.exe
1476 help.exe
1476 help.exe

pid	process
2056	Explorer.EXE

pid	process
4880	ymloqhw.exe
4880	ymloqhw.exe
4976	ymloqhw.exe
4976	ymloqhw.exe
4976	ymloqhw.exe
1476	help.exe
1476	help.exe
1476	help.exe
1476	help.exe

Suspicious use of AdjustPrivilegeToken 14 IoCs

Processes:

ymloqhw.exehelp.exeExplorer.EXE

description	pid	process
Token: SeDebugPrivilege	4976	ymloqhw.exe
Token: SeDebugPrivilege	1476	help.exe
Token: SeShutdownPrivilege	2056	Explorer.EXE
Token: SeCreatePagefilePrivilege	2056	Explorer.EXE
Token: SeShutdownPrivilege	2056	Explorer.EXE
Token: SeCreatePagefilePrivilege	2056	Explorer.EXE
Token: SeShutdownPrivilege	2056	Explorer.EXE
Token: SeCreatePagefilePrivilege	2056	Explorer.EXE
Token: SeShutdownPrivilege	2056	Explorer.EXE
Token: SeCreatePagefilePrivilege	2056	Explorer.EXE
Token: SeShutdownPrivilege	2056	Explorer.EXE
Token: SeCreatePagefilePrivilege	2056	Explorer.EXE
Token: SeShutdownPrivilege	2056	Explorer.EXE
Token: SeCreatePagefilePrivilege	2056	Explorer.EXE

Suspicious use of WriteProcessMemory 13 IoCs

Processes:

b85bcfc355d32617c12a2e71d4f80880.exeymloqhw.exeExplorer.EXEhelp.exe

description	pid	process	target process
PID 1572 wrote to memory of 4880	1572	b85bcfc355d32617c12a2e71d4f80880.exe	ymloqhw.exe
PID 1572 wrote to memory of 4880	1572	b85bcfc355d32617c12a2e71d4f80880.exe	ymloqhw.exe
PID 1572 wrote to memory of 4880	1572	b85bcfc355d32617c12a2e71d4f80880.exe	ymloqhw.exe
PID 4880 wrote to memory of 4976	4880	ymloqhw.exe	ymloqhw.exe
PID 4880 wrote to memory of 4976	4880	ymloqhw.exe	ymloqhw.exe
PID 4880 wrote to memory of 4976	4880	ymloqhw.exe	ymloqhw.exe
PID 4880 wrote to memory of 4976	4880	ymloqhw.exe	ymloqhw.exe
PID 2056 wrote to memory of 1476	2056	Explorer.EXE	help.exe
PID 2056 wrote to memory of 1476	2056	Explorer.EXE	help.exe
PID 2056 wrote to memory of 1476	2056	Explorer.EXE	help.exe
PID 1476 wrote to memory of 4228	1476	help.exe	Firefox.exe
PID 1476 wrote to memory of 4228	1476	help.exe	Firefox.exe
PID 1476 wrote to memory of 4228	1476	help.exe	Firefox.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2056

C:\Users\Admin\AppData\Local\Temp\b85bcfc355d32617c12a2e71d4f80880.exe
"C:\Users\Admin\AppData\Local\Temp\b85bcfc355d32617c12a2e71d4f80880.exe"
2⤵
- Suspicious use of WriteProcessMemory
PID:1572

C:\Users\Admin\AppData\Local\Temp\ymloqhw.exe
"C:\Users\Admin\AppData\Local\Temp\ymloqhw.exe" C:\Users\Admin\AppData\Local\Temp\mpghhn.eq
3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:4880

C:\Users\Admin\AppData\Local\Temp\ymloqhw.exe
"C:\Users\Admin\AppData\Local\Temp\ymloqhw.exe"
4⤵
- Executes dropped EXE
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:4976

C:\Windows\SysWOW64\help.exe
"C:\Windows\SysWOW64\help.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:1476

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:4228

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\hpthvgglt.l
Filesize
185KB

MD5
fb17e00ac583fe89f38f0bbb9ccb8050

SHA1
d46337d1555b7e55b0c93119bb64674e76e9d708

SHA256
52804ab58a315767b6a1e6aa2d2929c59fcebbf9987c1b1a96b29b5058cd2c2c

SHA512
3e7f33d00628e6dc65cae8ddbf6cc84a1ef2ae1216f7f95723f1045f98315361c4339bddae5045ef150052bd4e2212ff751476389da8f2a9abc86b7c841ae739

Download Submit
C:\Users\Admin\AppData\Local\Temp\mpghhn.eq
Filesize
5KB

MD5
c066e7e0e80848e742991ebd6b4312fe

SHA1
c837d365515949d61e35166a605019f9577b9755

SHA256
1864986a084fa6adcf2e34ca40bbbac13c238af9f9c3238123273bf2875c207c

SHA512
6ba1556565903a9bb2754e615d2feade7d14df0b59a48fc68a08a0d9ff6cc8f350f2897ecb04685e3934ca0770d346e858d8e6089b8460d87837e2dbc5dc8f76

Download Submit
C:\Users\Admin\AppData\Local\Temp\ymloqhw.exe
Filesize
100KB

MD5
62e7501ba9d2982ab16107c276d2e82a

SHA1
ebbb812d6cca55c6756beb4694bd430c54cd2ec9

SHA256
633fb361810f5cd64acfda82f0bfd93d26000c397187459b70e0d0ea922e94cf

SHA512
1ccc7662c751fec76204bc0db15cbb5ac20854b2c95a9a5cc82b100ae6b4c2ee0d8ad062c30bbc62a7c00884d85409ebfe6b0ce8f20b8b373602b9f4d3238ac6

Download Submit
C:\Users\Admin\AppData\Local\Temp\ymloqhw.exe
Filesize
100KB

MD5
62e7501ba9d2982ab16107c276d2e82a

SHA1
ebbb812d6cca55c6756beb4694bd430c54cd2ec9

SHA256
633fb361810f5cd64acfda82f0bfd93d26000c397187459b70e0d0ea922e94cf

SHA512
1ccc7662c751fec76204bc0db15cbb5ac20854b2c95a9a5cc82b100ae6b4c2ee0d8ad062c30bbc62a7c00884d85409ebfe6b0ce8f20b8b373602b9f4d3238ac6

Download Submit
C:\Users\Admin\AppData\Local\Temp\ymloqhw.exe
Filesize
100KB

MD5
62e7501ba9d2982ab16107c276d2e82a

SHA1
ebbb812d6cca55c6756beb4694bd430c54cd2ec9

SHA256
633fb361810f5cd64acfda82f0bfd93d26000c397187459b70e0d0ea922e94cf

SHA512
1ccc7662c751fec76204bc0db15cbb5ac20854b2c95a9a5cc82b100ae6b4c2ee0d8ad062c30bbc62a7c00884d85409ebfe6b0ce8f20b8b373602b9f4d3238ac6

Download Submit
memory/1476-145-0x0000000000480000-0x0000000000487000-memory.dmp

Filesize
28KB

Download
memory/1476-149-0x0000000000A40000-0x0000000000ACF000-memory.dmp

Filesize
572KB

Download
memory/1476-148-0x0000000000500000-0x000000000052D000-memory.dmp

Filesize
180KB

Download
memory/1476-147-0x0000000000500000-0x000000000052D000-memory.dmp

Filesize
180KB

Download
memory/1476-146-0x0000000000BB0000-0x0000000000EFA000-memory.dmp

Filesize
3.3MB

Download
memory/1476-143-0x0000000000000000-mapping.dmp

Download
memory/2056-176-0x0000000002460000-0x0000000002470000-memory.dmp

Filesize
64KB

Download
memory/2056-182-0x0000000002460000-0x0000000002470000-memory.dmp

Filesize
64KB

Download
memory/2056-222-0x0000000002460000-0x0000000002470000-memory.dmp

Filesize
64KB

Download
memory/2056-220-0x0000000002460000-0x0000000002470000-memory.dmp

Filesize
64KB

Download
memory/2056-221-0x0000000002460000-0x0000000002470000-memory.dmp

Filesize
64KB

Download
memory/2056-219-0x0000000002460000-0x0000000002470000-memory.dmp

Filesize
64KB

Download
memory/2056-218-0x0000000002460000-0x0000000002470000-memory.dmp

Filesize
64KB

Download
memory/2056-150-0x0000000008980000-0x0000000008AD3000-memory.dmp

Filesize
1.3MB

Download
memory/2056-151-0x0000000002460000-0x0000000002470000-memory.dmp

Filesize
64KB

Download
memory/2056-152-0x0000000002460000-0x0000000002470000-memory.dmp

Filesize
64KB

Download
memory/2056-153-0x0000000002970000-0x0000000002980000-memory.dmp

Filesize
64KB

Download
memory/2056-154-0x0000000002460000-0x0000000002470000-memory.dmp

Filesize
64KB

Download
memory/2056-155-0x0000000002460000-0x0000000002470000-memory.dmp

Filesize
64KB

Download
memory/2056-156-0x0000000002460000-0x0000000002470000-memory.dmp

Filesize
64KB

Download
memory/2056-157-0x0000000002460000-0x0000000002470000-memory.dmp

Filesize
64KB

Download
memory/2056-158-0x0000000002460000-0x0000000002470000-memory.dmp

Filesize
64KB

Download
memory/2056-159-0x0000000002460000-0x0000000002470000-memory.dmp

Filesize
64KB

Download
memory/2056-160-0x0000000002460000-0x0000000002470000-memory.dmp

Filesize
64KB

Download
memory/2056-161-0x0000000002460000-0x0000000002470000-memory.dmp

Filesize
64KB

Download
memory/2056-162-0x0000000002460000-0x0000000002470000-memory.dmp

Filesize
64KB

Download
memory/2056-163-0x0000000002460000-0x0000000002470000-memory.dmp

Filesize
64KB

Download
memory/2056-164-0x0000000002460000-0x0000000002470000-memory.dmp

Filesize
64KB

Download
memory/2056-165-0x0000000002460000-0x0000000002470000-memory.dmp

Filesize
64KB

Download
memory/2056-166-0x0000000002460000-0x0000000002470000-memory.dmp

Filesize
64KB

Download
memory/2056-167-0x0000000002460000-0x0000000002470000-memory.dmp

Filesize
64KB

Download
memory/2056-168-0x0000000002460000-0x0000000002470000-memory.dmp

Filesize
64KB

Download
memory/2056-169-0x0000000002460000-0x0000000002470000-memory.dmp

Filesize
64KB

Download
memory/2056-170-0x0000000007F10000-0x0000000007F20000-memory.dmp

Filesize
64KB

Download
memory/2056-171-0x0000000007F10000-0x0000000007F20000-memory.dmp

Filesize
64KB

Download
memory/2056-172-0x0000000008980000-0x0000000008AD3000-memory.dmp

Filesize
1.3MB

Download
memory/2056-173-0x0000000002970000-0x0000000002980000-memory.dmp

Filesize
64KB

Download
memory/2056-174-0x0000000007F10000-0x0000000007F20000-memory.dmp

Filesize
64KB

Download
memory/2056-175-0x0000000007F10000-0x0000000007F20000-memory.dmp

Filesize
64KB

Download
memory/2056-142-0x00000000085F0000-0x0000000008735000-memory.dmp

Filesize
1.3MB

Download
memory/2056-177-0x0000000002460000-0x0000000002470000-memory.dmp

Filesize
64KB

Download
memory/2056-178-0x0000000002460000-0x0000000002470000-memory.dmp

Filesize
64KB

Download
memory/2056-179-0x0000000002460000-0x0000000002470000-memory.dmp

Filesize
64KB

Download
memory/2056-180-0x0000000002460000-0x0000000002470000-memory.dmp

Filesize
64KB

Download
memory/2056-181-0x0000000002460000-0x0000000002470000-memory.dmp

Filesize
64KB

Download
memory/2056-217-0x0000000002460000-0x0000000002470000-memory.dmp

Filesize
64KB

Download
memory/2056-183-0x0000000002460000-0x0000000002470000-memory.dmp

Filesize
64KB

Download
memory/2056-184-0x0000000002460000-0x0000000002470000-memory.dmp

Filesize
64KB

Download
memory/2056-185-0x0000000002460000-0x0000000002470000-memory.dmp

Filesize
64KB

Download
memory/2056-186-0x0000000002460000-0x0000000002470000-memory.dmp

Filesize
64KB

Download
memory/2056-187-0x0000000002460000-0x0000000002470000-memory.dmp

Filesize
64KB

Download
memory/2056-188-0x0000000002460000-0x0000000002470000-memory.dmp

Filesize
64KB

Download
memory/2056-189-0x0000000002460000-0x0000000002470000-memory.dmp

Filesize
64KB

Download
memory/2056-190-0x0000000002460000-0x0000000002470000-memory.dmp

Filesize
64KB

Download
memory/2056-191-0x0000000002460000-0x0000000002470000-memory.dmp

Filesize
64KB

Download
memory/2056-192-0x0000000002460000-0x0000000002470000-memory.dmp

Filesize
64KB

Download
memory/2056-193-0x00000000023A0000-0x00000000023B0000-memory.dmp

Filesize
64KB

Download
memory/2056-194-0x00000000023A0000-0x00000000023B0000-memory.dmp

Filesize
64KB

Download
memory/2056-195-0x00000000023A0000-0x00000000023B0000-memory.dmp

Filesize
64KB

Download
memory/2056-196-0x00000000023A0000-0x00000000023B0000-memory.dmp

Filesize
64KB

Download
memory/2056-197-0x00000000023A0000-0x00000000023B0000-memory.dmp

Filesize
64KB

Download
memory/2056-198-0x00000000023A0000-0x00000000023B0000-memory.dmp

Filesize
64KB

Download
memory/2056-199-0x0000000002460000-0x0000000002470000-memory.dmp

Filesize
64KB

Download
memory/2056-200-0x0000000002460000-0x0000000002470000-memory.dmp

Filesize
64KB

Download
memory/2056-201-0x0000000002460000-0x0000000002470000-memory.dmp

Filesize
64KB

Download
memory/2056-202-0x0000000002460000-0x0000000002470000-memory.dmp

Filesize
64KB

Download
memory/2056-203-0x0000000002460000-0x0000000002470000-memory.dmp

Filesize
64KB

Download
memory/2056-204-0x0000000002460000-0x0000000002470000-memory.dmp

Filesize
64KB

Download
memory/2056-205-0x0000000002460000-0x0000000002470000-memory.dmp

Filesize
64KB

Download
memory/2056-206-0x0000000002460000-0x0000000002470000-memory.dmp

Filesize
64KB

Download
memory/2056-207-0x0000000002470000-0x0000000002480000-memory.dmp

Filesize
64KB

Download
memory/2056-208-0x0000000002460000-0x0000000002470000-memory.dmp

Filesize
64KB

Download
memory/2056-209-0x0000000002460000-0x0000000002470000-memory.dmp

Filesize
64KB

Download
memory/2056-211-0x0000000002460000-0x0000000002470000-memory.dmp

Filesize
64KB

Download
memory/2056-214-0x0000000002AE0000-0x0000000002AF0000-memory.dmp

Filesize
64KB

Download
memory/2056-215-0x0000000002460000-0x0000000002470000-memory.dmp

Filesize
64KB

Download
memory/2056-213-0x0000000002460000-0x0000000002470000-memory.dmp

Filesize
64KB

Download
memory/2056-210-0x0000000002460000-0x0000000002470000-memory.dmp

Filesize
64KB

Download
memory/4880-132-0x0000000000000000-mapping.dmp

Download
memory/4976-144-0x0000000000790000-0x00000000007BF000-memory.dmp

Filesize
188KB

Download
memory/4976-137-0x0000000000000000-mapping.dmp

Download
memory/4976-139-0x0000000000790000-0x00000000007BF000-memory.dmp

Filesize
188KB

Download
memory/4976-140-0x0000000000DB0000-0x00000000010FA000-memory.dmp

Filesize
3.3MB

Download
memory/4976-141-0x0000000000C70000-0x0000000000C80000-memory.dmp

Filesize
64KB

Download