formbook | ef0ceab01e813f995915d6c596bd663a469928024e9295b093388a4a7215bb1d

Analysis

max time kernel
153s
max time network
160s
platform
windows10-2004_x64
resource
win10v2004-20220901-en
resource tags

arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
submitted
21/11/2022, 14:22

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General

Target

ef0ceab01e813f995915d6c596bd663a469928024e9295b093388a4a7215bb1d.exe
Size

694KB
MD5

c4523a20a3e46acad92e1cb38adc378b
SHA1

3f239f11ee2a8728cc65266111abbf64b1f8dc53
SHA256

ef0ceab01e813f995915d6c596bd663a469928024e9295b093388a4a7215bb1d
SHA512

4b0c6c0615b8c16583e21e7b68ec5c38e0f5ac1f480f3308d5734ce598836a2e27a80e2959458690ee9dcd7544ece9fad7e23b6c0356784524d6e0e439b4162b
SSDEEP

6144:rEa0dpkNz07AFqV57lNO4/mq3kl9SK5WO+Dg/Fb5aHDiTBfA+RhdUx9:Y57lNPmikl9SK5WAHkDiT5AshOf

Score

10^/10

formbook 54ut rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Campaign

54ut

Decoy

1DeiXmzDLw+mW17NwLBXpXM=

Nouf/qArBV5GAPfIhxWPkDFrVQ==

9OCYganx4VaCX1EY/sUSfRDLx6s=

xh8rlilJ/SGckKI=

HGyA64YZyhUs3jvzno2F

yx7/XhxTuRiTcnLKrrOOXTrpW60=

ZYI6IbtcBFx+OpnLU0nXmw==

MhgenS1xYWYThQgS+A==

s0ada4bHHvtWWbYb

2/4IbaW+Ljsy6Ujzno2F

Z5WdKMj5YLgpH0ypdTEcLe2W/lf7j6Io

xXTmzNjzpvUMwTAHwYv2kw==

kcbnSAS0pkV2G1fXsFktVxiXmLTktXY=

PU0V5f0rnqjEhQgS+A==

Z8aNX4Sm/dbGhQgS+A==

s4bq4W4D4UJdYqqvU0nXmw==

a56Z6W0Asvwh3jzzno2F

Qmhm+fY3o6bEhQgS+A==

WIFCKZ/ZO+dCwTAHwYv2kw==

Nqjne5GxXbzY1f3Qp2rBkDFrVQ==

Signatures

Formbook
Formbook is a data stealing malware which is capable of stealing data.
trojan spyware stealer formbook

Executes dropped EXE 2 IoCs

pid	Process
2168	lxwjyyca.exe
4748	lxwjyyca.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-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation	lxwjyyca.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 3 IoCs

description	pid	Process	procid_target
PID 2168 set thread context of 4748	2168	lxwjyyca.exe	82
PID 4748 set thread context of 760	4748	lxwjyyca.exe	42
PID 4276 set thread context of 760	4276	cmd.exe	42

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

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

Suspicious behavior: EnumeratesProcesses 60 IoCs

pid	Process
4748	lxwjyyca.exe
4748	lxwjyyca.exe
4748	lxwjyyca.exe
4748	lxwjyyca.exe
4748	lxwjyyca.exe
4748	lxwjyyca.exe
4748	lxwjyyca.exe
4748	lxwjyyca.exe
4276	cmd.exe
4276	cmd.exe
4276	cmd.exe
4276	cmd.exe
4276	cmd.exe
4276	cmd.exe
4276	cmd.exe
4276	cmd.exe
4276	cmd.exe
4276	cmd.exe
4276	cmd.exe
4276	cmd.exe
4276	cmd.exe
4276	cmd.exe
4276	cmd.exe
4276	cmd.exe
4276	cmd.exe
4276	cmd.exe
4276	cmd.exe
4276	cmd.exe
4276	cmd.exe
4276	cmd.exe
4276	cmd.exe
4276	cmd.exe
4276	cmd.exe
4276	cmd.exe
4276	cmd.exe
4276	cmd.exe
4276	cmd.exe
4276	cmd.exe
4276	cmd.exe
4276	cmd.exe
4276	cmd.exe
4276	cmd.exe
4276	cmd.exe
4276	cmd.exe
4276	cmd.exe
4276	cmd.exe
4276	cmd.exe
4276	cmd.exe
4276	cmd.exe
4276	cmd.exe
4276	cmd.exe
4276	cmd.exe
4276	cmd.exe
4276	cmd.exe
4276	cmd.exe
4276	cmd.exe
4276	cmd.exe
4276	cmd.exe
4276	cmd.exe
4276	cmd.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
760	Explorer.EXE

Suspicious behavior: MapViewOfSection 8 IoCs

pid	Process
2168	lxwjyyca.exe
4748	lxwjyyca.exe
4748	lxwjyyca.exe
4748	lxwjyyca.exe
4276	cmd.exe
4276	cmd.exe
4276	cmd.exe
4276	cmd.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4748	lxwjyyca.exe
Token: SeDebugPrivilege	4276	cmd.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 1516 wrote to memory of 2168	1516	ef0ceab01e813f995915d6c596bd663a469928024e9295b093388a4a7215bb1d.exe	81
PID 1516 wrote to memory of 2168	1516	ef0ceab01e813f995915d6c596bd663a469928024e9295b093388a4a7215bb1d.exe	81
PID 1516 wrote to memory of 2168	1516	ef0ceab01e813f995915d6c596bd663a469928024e9295b093388a4a7215bb1d.exe	81
PID 2168 wrote to memory of 4748	2168	lxwjyyca.exe	82
PID 2168 wrote to memory of 4748	2168	lxwjyyca.exe	82
PID 2168 wrote to memory of 4748	2168	lxwjyyca.exe	82
PID 2168 wrote to memory of 4748	2168	lxwjyyca.exe	82
PID 760 wrote to memory of 4276	760	Explorer.EXE	83
PID 760 wrote to memory of 4276	760	Explorer.EXE	83
PID 760 wrote to memory of 4276	760	Explorer.EXE	83
PID 4276 wrote to memory of 4720	4276	cmd.exe	91
PID 4276 wrote to memory of 4720	4276	cmd.exe	91
PID 4276 wrote to memory of 4720	4276	cmd.exe	91

C:\Users\Admin\AppData\Local\Temp\ef0ceab01e813f995915d6c596bd663a469928024e9295b093388a4a7215bb1d.exe
"C:\Users\Admin\AppData\Local\Temp\ef0ceab01e813f995915d6c596bd663a469928024e9295b093388a4a7215bb1d.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1516
- C:\Users\Admin\AppData\Local\Temp\lxwjyyca.exe
  "C:\Users\Admin\AppData\Local\Temp\lxwjyyca.exe" C:\Users\Admin\AppData\Local\Temp\fxecd.cy
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:2168
- - C:\Users\Admin\AppData\Local\Temp\lxwjyyca.exe
    "C:\Users\Admin\AppData\Local\Temp\lxwjyyca.exe" C:\Users\Admin\AppData\Local\Temp\fxecd.cy
    3⤵
    - Executes dropped EXE
    - Checks computer location settings
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:4748

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:760
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\SysWOW64\cmd.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:4276
- - 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

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

C:\Users\Admin\AppData\Local\Temp\djpudrw.ffl

Filesize
185KB

MD5
410b0e1ae9265692e672430d50b4e5f7

SHA1
8f7daade2c549fec9a613cad851ed60c1ec36f91

SHA256
cf7799eb914a83e85c6398bd8ac13e2a57332a14f25997a202e235e984516811

SHA512
eaa83e351ca83bd93686c6b54279a2b4a93982f8e2d2b59d7e1feddd3b83170bee762191c0a5649f0f41b809fd50ce7d8d78db057c98e1fc90d5035d372f3fc3

Download Submit
C:\Users\Admin\AppData\Local\Temp\fxecd.cy

Filesize
5KB

MD5
e42eae76e993fb2928e526c735624d6c

SHA1
f439caeec2b4f48ffa25c02d51582e043efb08dd

SHA256
7d3d7d5483525526ee245c09cbefe52f8be767d1eeaa598012460da43bdbba01

SHA512
3d64e45dc510520aa586cbaae77721d572431e8c66a9a2d1aef5ade9e53af958688609f81f87d02228cc7feb5aa0b26163e3b4a47d0a22e52b2f3c05fc25f8e2

Download Submit
C:\Users\Admin\AppData\Local\Temp\lxwjyyca.exe

Filesize
91KB

MD5
3a76c89356dc6d77e58b960ca72042c6

SHA1
2871a87aa6187ab32099f7b25341bb70fae1d972

SHA256
ff76ab009b21cf1f949a747aaf83e3232ea253f69ff04720cc66401405c831a7

SHA512
2dedf92c6ded4b991e561bae465bbb449acd0ba99c94d5bb186b9bc14b8c18cc17e7f2f63506f5e52744838f60741f3cc137cf51ffb441212ce8606dd4b89673

Download Submit
C:\Users\Admin\AppData\Local\Temp\lxwjyyca.exe

Filesize
91KB

MD5
3a76c89356dc6d77e58b960ca72042c6

SHA1
2871a87aa6187ab32099f7b25341bb70fae1d972

SHA256
ff76ab009b21cf1f949a747aaf83e3232ea253f69ff04720cc66401405c831a7

SHA512
2dedf92c6ded4b991e561bae465bbb449acd0ba99c94d5bb186b9bc14b8c18cc17e7f2f63506f5e52744838f60741f3cc137cf51ffb441212ce8606dd4b89673

Download Submit
C:\Users\Admin\AppData\Local\Temp\lxwjyyca.exe

Filesize
91KB

MD5
3a76c89356dc6d77e58b960ca72042c6

SHA1
2871a87aa6187ab32099f7b25341bb70fae1d972

SHA256
ff76ab009b21cf1f949a747aaf83e3232ea253f69ff04720cc66401405c831a7

SHA512
2dedf92c6ded4b991e561bae465bbb449acd0ba99c94d5bb186b9bc14b8c18cc17e7f2f63506f5e52744838f60741f3cc137cf51ffb441212ce8606dd4b89673

Download Submit
memory/760-152-0x0000000002A10000-0x0000000002AED000-memory.dmp

Filesize
884KB

Download
memory/760-150-0x0000000002A10000-0x0000000002AED000-memory.dmp

Filesize
884KB

Download
memory/760-144-0x0000000007E40000-0x0000000007F63000-memory.dmp

Filesize
1.1MB

Download
memory/4276-146-0x0000000000AF0000-0x0000000000B4A000-memory.dmp

Filesize
360KB

Download
memory/4276-151-0x0000000000D40000-0x0000000000D6D000-memory.dmp

Filesize
180KB

Download
memory/4276-149-0x0000000001720000-0x00000000017AF000-memory.dmp

Filesize
572KB

Download
memory/4276-148-0x0000000001980000-0x0000000001CCA000-memory.dmp

Filesize
3.3MB

Download
memory/4276-147-0x0000000000D40000-0x0000000000D6D000-memory.dmp

Filesize
180KB

Download
memory/4748-143-0x00000000006A0000-0x00000000006B0000-memory.dmp

Filesize
64KB

Download
memory/4748-142-0x0000000000B10000-0x0000000000E5A000-memory.dmp

Filesize
3.3MB

Download
memory/4748-141-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4748-140-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4748-139-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download