formbook | b918ed3991e3f8cbcac0ec8b4d3d176634be12ed0614654cef1df9b84e15b4de

Analysis

max time kernel
150s
max time network
152s
platform
windows7_x64
resource
win7-20230220-en
resource tags

arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
submitted
23-03-2023 01:54

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General

Target

1193af601f7742f964a6b14b0616a860.exe
Size

294KB
MD5

1193af601f7742f964a6b14b0616a860
SHA1

5f18b2b9aa276eb7a98593fce285c3d4d1705cf8
SHA256

b918ed3991e3f8cbcac0ec8b4d3d176634be12ed0614654cef1df9b84e15b4de
SHA512

96632f81685bc25a590153c3f18a6611e8a285dc5fde3b38e090360e91ebf7dd5f37cc91bc0e50325644b17430caf5c5112b855a35e906f8b3da1faa586b65d1
SSDEEP

6144:PYa6kUTqhzYIewfyV32depRkYu9iRooob:PY6WgzEdpfPof

Score

10^/10

formbook dcn0 rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Campaign

dcn0

Decoy

ZVx68vDtAMBCwg==

oBMBvsNORkM/O/ox

Ff9pISWkm6eG4lByIspp

c2T42c6CIIF6B8xTxm9XzpVw

bvjhxRbnAC183w==

0lTttSNG4HUDNflyIspp

hPXFlstqiHA/O/ox

WLR+MeerxZ0cNn1ja+IQAYo=

IHRn4xXOVKi477zarG+ObSy7YJA=

Xhf3e+tdAC183w==

Xk0ZAezv2rWH

kngo+vBeSRN7AszNwam3Osmguuqc0MoC

a2Qp7a+E8fSw7LDjpnqEKjsRZA==

3zjy4E7+QM48wg==

YcCmqT3OUNAigVott2pBKiy7YJA=

4+SMeX1juat/5cZ1AZihcyy7YJA=

/+m7sro0OBTl3TMpCw==

i2ctEfe4//a64yklMsgS2J90

+loZ2QKGX0UWgpvErMs=

b9BNCnJWQJS8IfsR0uR3bCy7YJA=

Signatures

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

hiufmy.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000\Control Panel\International\Geo\Nation hiufmy.exe
Executes dropped EXE 2 IoCs

Processes:

hiufmy.exehiufmy.exe

pid process

1388 hiufmy.exe
1872 hiufmy.exe
Loads dropped DLL 4 IoCs

Processes:

1193af601f7742f964a6b14b0616a860.exehiufmy.exemsdt.exe

pid process

2012 1193af601f7742f964a6b14b0616a860.exe
2012 1193af601f7742f964a6b14b0616a860.exe
1388 hiufmy.exe
1316 msdt.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000\Control Panel\International\Geo\Nation	hiufmy.exe

pid	process
1388	hiufmy.exe
1872	hiufmy.exe

pid	process
2012	1193af601f7742f964a6b14b0616a860.exe
2012	1193af601f7742f964a6b14b0616a860.exe
1388	hiufmy.exe
1316	msdt.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

hiufmy.exehiufmy.exemsdt.exe

description	pid	process	target process
PID 1388 set thread context of 1872	1388	hiufmy.exe	hiufmy.exe
PID 1872 set thread context of 1236	1872	hiufmy.exe	Explorer.EXE
PID 1316 set thread context of 1236	1316	msdt.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:

msdt.exe

description	ioc	process
Key created	\Registry\User\S-1-5-21-3430344531-3702557399-3004411149-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	msdt.exe

Suspicious behavior: EnumeratesProcesses 27 IoCs

Processes:

hiufmy.exemsdt.exe

pid	process
1872	hiufmy.exe
1872	hiufmy.exe
1872	hiufmy.exe
1872	hiufmy.exe
1316	msdt.exe
1316	msdt.exe
1316	msdt.exe
1316	msdt.exe
1316	msdt.exe
1316	msdt.exe
1316	msdt.exe
1316	msdt.exe
1316	msdt.exe
1316	msdt.exe
1316	msdt.exe
1316	msdt.exe
1316	msdt.exe
1316	msdt.exe
1316	msdt.exe
1316	msdt.exe
1316	msdt.exe
1316	msdt.exe
1316	msdt.exe
1316	msdt.exe
1316	msdt.exe
1316	msdt.exe
1316	msdt.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

1236 Explorer.EXE
Suspicious behavior: MapViewOfSection 8 IoCs

Processes:

hiufmy.exehiufmy.exemsdt.exe

pid process

1388 hiufmy.exe
1872 hiufmy.exe
1872 hiufmy.exe
1872 hiufmy.exe
1316 msdt.exe
1316 msdt.exe
1316 msdt.exe
1316 msdt.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

hiufmy.exemsdt.exe

description pid process

Token: SeDebugPrivilege 1872 hiufmy.exe
Token: SeDebugPrivilege 1316 msdt.exe
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

Explorer.EXE

pid process

1236 Explorer.EXE
1236 Explorer.EXE
Suspicious use of SendNotifyMessage 2 IoCs

Processes:

Explorer.EXE

pid process

1236 Explorer.EXE
1236 Explorer.EXE

pid	process
1236	Explorer.EXE

pid	process
1388	hiufmy.exe
1872	hiufmy.exe
1872	hiufmy.exe
1872	hiufmy.exe
1316	msdt.exe
1316	msdt.exe
1316	msdt.exe
1316	msdt.exe

description	pid	process
Token: SeDebugPrivilege	1872	hiufmy.exe
Token: SeDebugPrivilege	1316	msdt.exe

pid	process
1236	Explorer.EXE
1236	Explorer.EXE

pid	process
1236	Explorer.EXE
1236	Explorer.EXE

Suspicious use of WriteProcessMemory 18 IoCs

Processes:

1193af601f7742f964a6b14b0616a860.exehiufmy.exeExplorer.EXEmsdt.exe

description	pid	process	target process
PID 2012 wrote to memory of 1388	2012	1193af601f7742f964a6b14b0616a860.exe	hiufmy.exe
PID 2012 wrote to memory of 1388	2012	1193af601f7742f964a6b14b0616a860.exe	hiufmy.exe
PID 2012 wrote to memory of 1388	2012	1193af601f7742f964a6b14b0616a860.exe	hiufmy.exe
PID 2012 wrote to memory of 1388	2012	1193af601f7742f964a6b14b0616a860.exe	hiufmy.exe
PID 1388 wrote to memory of 1872	1388	hiufmy.exe	hiufmy.exe
PID 1388 wrote to memory of 1872	1388	hiufmy.exe	hiufmy.exe
PID 1388 wrote to memory of 1872	1388	hiufmy.exe	hiufmy.exe
PID 1388 wrote to memory of 1872	1388	hiufmy.exe	hiufmy.exe
PID 1388 wrote to memory of 1872	1388	hiufmy.exe	hiufmy.exe
PID 1236 wrote to memory of 1316	1236	Explorer.EXE	msdt.exe
PID 1236 wrote to memory of 1316	1236	Explorer.EXE	msdt.exe
PID 1236 wrote to memory of 1316	1236	Explorer.EXE	msdt.exe
PID 1236 wrote to memory of 1316	1236	Explorer.EXE	msdt.exe
PID 1316 wrote to memory of 1128	1316	msdt.exe	Firefox.exe
PID 1316 wrote to memory of 1128	1316	msdt.exe	Firefox.exe
PID 1316 wrote to memory of 1128	1316	msdt.exe	Firefox.exe
PID 1316 wrote to memory of 1128	1316	msdt.exe	Firefox.exe
PID 1316 wrote to memory of 1128	1316	msdt.exe	Firefox.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1236

C:\Users\Admin\AppData\Local\Temp\1193af601f7742f964a6b14b0616a860.exe
"C:\Users\Admin\AppData\Local\Temp\1193af601f7742f964a6b14b0616a860.exe"
2⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2012

C:\Users\Admin\AppData\Local\Temp\hiufmy.exe
"C:\Users\Admin\AppData\Local\Temp\hiufmy.exe" C:\Users\Admin\AppData\Local\Temp\ufrrm.re
3⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:1388

C:\Users\Admin\AppData\Local\Temp\hiufmy.exe
"C:\Users\Admin\AppData\Local\Temp\hiufmy.exe"
4⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:1872

C:\Windows\SysWOW64\msdt.exe
"C:\Windows\SysWOW64\msdt.exe"
2⤵
- 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:1316

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:1128

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\hiufmy.exe
Filesize
99KB

MD5
9bd983a7f7cafd066b183cc621731ace

SHA1
5e48e8f6d654301ea92eba3e2719d61253be59e5

SHA256
9a45850409d77e661e6add9914865303eeee16199f2db1065b5faf143b2a6290

SHA512
435bcd4af83ba253b45c12f30890fcfae083fc3760e5d25b366469cf330eaa7d553c86687d334ab0b19d4ffe0ccda8cdba60f2d069845e5ec15a4ec564e25a35

Download Submit
C:\Users\Admin\AppData\Local\Temp\hiufmy.exe
Filesize
99KB

MD5
9bd983a7f7cafd066b183cc621731ace

SHA1
5e48e8f6d654301ea92eba3e2719d61253be59e5

SHA256
9a45850409d77e661e6add9914865303eeee16199f2db1065b5faf143b2a6290

SHA512
435bcd4af83ba253b45c12f30890fcfae083fc3760e5d25b366469cf330eaa7d553c86687d334ab0b19d4ffe0ccda8cdba60f2d069845e5ec15a4ec564e25a35

Download Submit
C:\Users\Admin\AppData\Local\Temp\hiufmy.exe
Filesize
99KB

MD5
9bd983a7f7cafd066b183cc621731ace

SHA1
5e48e8f6d654301ea92eba3e2719d61253be59e5

SHA256
9a45850409d77e661e6add9914865303eeee16199f2db1065b5faf143b2a6290

SHA512
435bcd4af83ba253b45c12f30890fcfae083fc3760e5d25b366469cf330eaa7d553c86687d334ab0b19d4ffe0ccda8cdba60f2d069845e5ec15a4ec564e25a35

Download Submit
C:\Users\Admin\AppData\Local\Temp\hiufmy.exe
Filesize
99KB

MD5
9bd983a7f7cafd066b183cc621731ace

SHA1
5e48e8f6d654301ea92eba3e2719d61253be59e5

SHA256
9a45850409d77e661e6add9914865303eeee16199f2db1065b5faf143b2a6290

SHA512
435bcd4af83ba253b45c12f30890fcfae083fc3760e5d25b366469cf330eaa7d553c86687d334ab0b19d4ffe0ccda8cdba60f2d069845e5ec15a4ec564e25a35

Download Submit
C:\Users\Admin\AppData\Local\Temp\lrhlbv.zip
Filesize
478KB

MD5
72b88067a5a1a4f8d52c45e6621d13fe

SHA1
f84542474b8583f4371749282e5cc4d52661c222

SHA256
70a11669bb8ad1099fd7fba9da92e1a75124bef0d16a01fd10dcdc45e9582092

SHA512
a8bf75fd4f38e4c8dee5e6f2527062c5be21f5a8bae4ea561f4aa28139d65a6f215afb212f1e4857ee482e16e813fc0d63ef8ec43ec94d5f8a722489e89e154d

Download Submit
C:\Users\Admin\AppData\Local\Temp\ufrrm.re
Filesize
6KB

MD5
0f55e8f1fafe8a10f5d0700f89845b20

SHA1
a1b14d2a50993d55057ed453b39e8124ed3f79f7

SHA256
c4ab35124468b9bb5ea0bb6e26a9694ea1554bd8592270e2260bf8f3dcf49a90

SHA512
1962c15d715a73f8c2754301f43d64f3127a83a1189c58f07bf16788b6d48267e0a05dfb8847924d268eff90c22543c088dc564eda080fec62f4a31dc5fc965c

Download Submit
C:\Users\Admin\AppData\Local\Temp\uxpgjlroki.mcz
Filesize
204KB

MD5
07f0262d1a9028a22e5c35b9b5e00642

SHA1
cc26afbd084517a34063409b705dd3c58f5f7bc3

SHA256
ee1453e0677273ef631502e9cd13f195ea0530d1f6d95c6f0cc6fe92e97c4dca

SHA512
5c30c933d5dbec9254327160438fd6c162c2e6b6ba7a54040f708719196bb14f4a1fb962ebe0573947a6db597b1801f85681272e155e43818d27437132a75a20

Download Submit
\Users\Admin\AppData\Local\Temp\hiufmy.exe
Filesize
99KB

MD5
9bd983a7f7cafd066b183cc621731ace

SHA1
5e48e8f6d654301ea92eba3e2719d61253be59e5

SHA256
9a45850409d77e661e6add9914865303eeee16199f2db1065b5faf143b2a6290

SHA512
435bcd4af83ba253b45c12f30890fcfae083fc3760e5d25b366469cf330eaa7d553c86687d334ab0b19d4ffe0ccda8cdba60f2d069845e5ec15a4ec564e25a35

Download Submit
\Users\Admin\AppData\Local\Temp\hiufmy.exe
Filesize
99KB

MD5
9bd983a7f7cafd066b183cc621731ace

SHA1
5e48e8f6d654301ea92eba3e2719d61253be59e5

SHA256
9a45850409d77e661e6add9914865303eeee16199f2db1065b5faf143b2a6290

SHA512
435bcd4af83ba253b45c12f30890fcfae083fc3760e5d25b366469cf330eaa7d553c86687d334ab0b19d4ffe0ccda8cdba60f2d069845e5ec15a4ec564e25a35

Download Submit
\Users\Admin\AppData\Local\Temp\hiufmy.exe
Filesize
99KB

MD5
9bd983a7f7cafd066b183cc621731ace

SHA1
5e48e8f6d654301ea92eba3e2719d61253be59e5

SHA256
9a45850409d77e661e6add9914865303eeee16199f2db1065b5faf143b2a6290

SHA512
435bcd4af83ba253b45c12f30890fcfae083fc3760e5d25b366469cf330eaa7d553c86687d334ab0b19d4ffe0ccda8cdba60f2d069845e5ec15a4ec564e25a35

Download Submit
\Users\Admin\AppData\Local\Temp\sqlite3.dll
Filesize
910KB

MD5
d79258c5189103d69502eac786addb04

SHA1
f34b33681cfe8ce649218173a7f58b237821c1ef

SHA256
57d89a52061d70d87e40281f1196d53273f87860c4d707d667a8c7d9573da675

SHA512
da797f4dd1ad628aa4e8004b2e00b7c278facbc57a313f56b70dc8fcfbdb0050ea8b025b3475098223cce96ea53537d678273656d46c2d33d81b496d90da34b2

Download Submit
memory/1236-74-0x0000000002E20000-0x0000000002F20000-memory.dmp

Filesize
1024KB

Download
memory/1236-90-0x000007FF0C130000-0x000007FF0C13A000-memory.dmp

Filesize
40KB

Download
memory/1236-89-0x0000000004D40000-0x0000000004DFA000-memory.dmp

Filesize
744KB

Download
memory/1236-87-0x0000000004D40000-0x0000000004DFA000-memory.dmp

Filesize
744KB

Download
memory/1236-78-0x0000000004B50000-0x0000000004C1E000-memory.dmp

Filesize
824KB

Download
memory/1236-86-0x0000000004D40000-0x0000000004DFA000-memory.dmp

Filesize
744KB

Download
memory/1316-85-0x0000000002010000-0x000000000209F000-memory.dmp

Filesize
572KB

Download
memory/1316-82-0x00000000022E0000-0x00000000025E3000-memory.dmp

Filesize
3.0MB

Download
memory/1316-81-0x00000000000C0000-0x00000000000ED000-memory.dmp

Filesize
180KB

Download
memory/1316-83-0x00000000000C0000-0x00000000000ED000-memory.dmp

Filesize
180KB

Download
memory/1316-80-0x0000000000B10000-0x0000000000C04000-memory.dmp

Filesize
976KB

Download
memory/1316-79-0x0000000000B10000-0x0000000000C04000-memory.dmp

Filesize
976KB

Download
memory/1316-134-0x0000000061E00000-0x0000000061ECF000-memory.dmp

Filesize
828KB

Download
memory/1872-77-0x0000000000160000-0x0000000000170000-memory.dmp

Filesize
64KB

Download
memory/1872-76-0x0000000000870000-0x0000000000B73000-memory.dmp

Filesize
3.0MB

Download
memory/1872-75-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/1872-73-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/1872-69-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download