formbook | ed39cdb38f54700c6cf37768cabd78367a0de953ab1e64b1fd8e9b640e91d8f3

General

Target

ed39cdb38f54700c6cf37768cabd78367a0de953ab1e64b1fd8e9b640e91d8f3_JC.exe
Size

970KB
MD5

661c72c6ea35739a807366da34d0052f
SHA1

3eea434063b29bd161c875d4ab22ac9983c7bf6e
SHA256

ed39cdb38f54700c6cf37768cabd78367a0de953ab1e64b1fd8e9b640e91d8f3
SHA512

185cc33cbcb52f3dfa5029631d2fef28fd3133c115fdb9d239ead22822ca8ef5066614a405d1c079e770d55acbe2e9da70c95fb5f4f03bc75a9ebd61c4da7e67
SSDEEP

12288:Hh1Lk70TnvjcXn4GJmWvNgczUjmYYSHIFHpCLE+8MbElL3JWl8CnpOOXA:Tk70TrcX4zWvNPURNIFIEWbqYpO

Score

10^/10

formbook bz24 rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

bz24

Decoy

paltran.com

convadesolutions.com

smyx9b.work

friggerio.com

jndyfjc.com

dm4im2q2.top

adamloweforpresident2020.com

grvtyindustries.com

lovelycacau.com

seqizi.net

xisl88.com

dateknightdelivered.com

celebsmoaic.online

patriciolawnlandscapellc.com

liqq.asia

solutions4educators.com

hybridrate.com

newseza.com

enfejbaz9jdfthea.click

bergstromchevymadison.com

Signatures

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

Formbook payload 5 IoCs

rat

resource	yara_rule
behavioral1/memory/2076-15-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2076-19-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2076-23-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2488-29-0x0000000000080000-0x00000000000AF000-memory.dmp	formbook
behavioral1/memory/2488-31-0x0000000000080000-0x00000000000AF000-memory.dmp	formbook

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 2992 set thread context of 2076	2992	ed39cdb38f54700c6cf37768cabd78367a0de953ab1e64b1fd8e9b640e91d8f3_JC.exe	28
PID 2076 set thread context of 1240	2076	aspnet_compiler.exe	12
PID 2076 set thread context of 1240	2076	aspnet_compiler.exe	12
PID 2488 set thread context of 1240	2488	chkdsk.exe	12

Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	chkdsk.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\Registry\User\S-1-5-21-3849525425-30183055-657688904-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	chkdsk.exe

Suspicious behavior: EnumeratesProcesses 22 IoCs

pid	Process
2076	aspnet_compiler.exe
2076	aspnet_compiler.exe
2076	aspnet_compiler.exe
2488	chkdsk.exe
2488	chkdsk.exe
2488	chkdsk.exe
2488	chkdsk.exe
2488	chkdsk.exe
2488	chkdsk.exe
2488	chkdsk.exe
2488	chkdsk.exe
2488	chkdsk.exe
2488	chkdsk.exe
2488	chkdsk.exe
2488	chkdsk.exe
2488	chkdsk.exe
2488	chkdsk.exe
2488	chkdsk.exe
2488	chkdsk.exe
2488	chkdsk.exe
2488	chkdsk.exe
2488	chkdsk.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1240	Explorer.EXE

Suspicious behavior: MapViewOfSection 8 IoCs

pid	Process
2076	aspnet_compiler.exe
2076	aspnet_compiler.exe
2076	aspnet_compiler.exe
2076	aspnet_compiler.exe
2488	chkdsk.exe
2488	chkdsk.exe
2488	chkdsk.exe
2488	chkdsk.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2076	aspnet_compiler.exe
Token: SeDebugPrivilege	2488	chkdsk.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 2992 wrote to memory of 2076	2992	ed39cdb38f54700c6cf37768cabd78367a0de953ab1e64b1fd8e9b640e91d8f3_JC.exe	28
PID 2992 wrote to memory of 2076	2992	ed39cdb38f54700c6cf37768cabd78367a0de953ab1e64b1fd8e9b640e91d8f3_JC.exe	28
PID 2992 wrote to memory of 2076	2992	ed39cdb38f54700c6cf37768cabd78367a0de953ab1e64b1fd8e9b640e91d8f3_JC.exe	28
PID 2992 wrote to memory of 2076	2992	ed39cdb38f54700c6cf37768cabd78367a0de953ab1e64b1fd8e9b640e91d8f3_JC.exe	28
PID 2992 wrote to memory of 2076	2992	ed39cdb38f54700c6cf37768cabd78367a0de953ab1e64b1fd8e9b640e91d8f3_JC.exe	28
PID 2992 wrote to memory of 2076	2992	ed39cdb38f54700c6cf37768cabd78367a0de953ab1e64b1fd8e9b640e91d8f3_JC.exe	28
PID 2992 wrote to memory of 2076	2992	ed39cdb38f54700c6cf37768cabd78367a0de953ab1e64b1fd8e9b640e91d8f3_JC.exe	28
PID 1240 wrote to memory of 2488	1240	Explorer.EXE	31
PID 1240 wrote to memory of 2488	1240	Explorer.EXE	31
PID 1240 wrote to memory of 2488	1240	Explorer.EXE	31
PID 1240 wrote to memory of 2488	1240	Explorer.EXE	31
PID 2488 wrote to memory of 2668	2488	chkdsk.exe	33
PID 2488 wrote to memory of 2668	2488	chkdsk.exe	33
PID 2488 wrote to memory of 2668	2488	chkdsk.exe	33
PID 2488 wrote to memory of 2668	2488	chkdsk.exe	33
PID 2488 wrote to memory of 2668	2488	chkdsk.exe	33

C:\Users\Admin\AppData\Local\Temp\ed39cdb38f54700c6cf37768cabd78367a0de953ab1e64b1fd8e9b640e91d8f3_JC.exe
"C:\Users\Admin\AppData\Local\Temp\ed39cdb38f54700c6cf37768cabd78367a0de953ab1e64b1fd8e9b640e91d8f3_JC.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2992
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  PID:2076

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:1240
- C:\Windows\SysWOW64\chkdsk.exe
  "C:\Windows\SysWOW64\chkdsk.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Enumerates system info in registry
  - Modifies Internet Explorer settings
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2488
- - C:\Program Files\Mozilla Firefox\Firefox.exe
    "C:\Program Files\Mozilla Firefox\Firefox.exe"
    3⤵
    PID:2668

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\9PM15TB1\9PMlogim.jpeg

Filesize
71KB

MD5
3f1728163c21f0554a51536899138820

SHA1
a5cfdf66f994402588492d4b223e793734ba88d7

SHA256
c403e83c9b8270cc280d81e4c8585e94007850512870b886db32da8fc182e5a0

SHA512
91ab0fde522d0496e11095b97a195a8f4ccee1603c4cf2b20b87c617d5c10b277cd409dc85e7c6c3e680d63636c89dd88dd77ef4959c2f0d5c77ffcff5547ec9

Download Submit
C:\Users\Admin\AppData\Roaming\9PM15TB1\9PMlogrf.ini

Filesize
40B

MD5
2f245469795b865bdd1b956c23d7893d

SHA1
6ad80b974d3808f5a20ea1e766c7d2f88b9e5895

SHA256
1662d01a2d47b875a34fc7a8cd92e78cb2ba7f34023c7fd2639cbb10b8d94361

SHA512
909f189846a5d2db208a5eb2e7cb3042c0f164caf437e2b1b6de608c0a70e4f3510b81b85753dbeec1e211e6a83e6ea8c96aff896e9b6e8ed42014473a54dc4f

Download Submit
C:\Users\Admin\AppData\Roaming\9PM15TB1\9PMlogri.ini

Filesize
40B

MD5
d63a82e5d81e02e399090af26db0b9cb

SHA1
91d0014c8f54743bba141fd60c9d963f869d76c9

SHA256
eaece2eba6310253249603033c744dd5914089b0bb26bde6685ec9813611baae

SHA512
38afb05016d8f3c69d246321573997aaac8a51c34e61749a02bf5e8b2b56b94d9544d65801511044e1495906a86dc2100f2e20ff4fcbed09e01904cc780fdbad

Download Submit
C:\Users\Admin\AppData\Roaming\9PM15TB1\9PMlogrv.ini

Filesize
40B

MD5
ba3b6bc807d4f76794c4b81b09bb9ba5

SHA1
24cb89501f0212ff3095ecc0aba97dd563718fb1

SHA256
6eebf968962745b2e9de2ca969af7c424916d4e3fe3cc0bb9b3d414abfce9507

SHA512
ecd07e601fc9e3cfc39addd7bd6f3d7f7ff3253afb40bf536e9eaac5a4c243e5ec40fbfd7b216cb0ea29f2517419601e335e33ba19dea4a46f65e38694d465bf

Download Submit
memory/1240-25-0x0000000000010000-0x0000000000020000-memory.dmp

Filesize
64KB

Download
memory/1240-41-0x0000000006BD0000-0x0000000006CD8000-memory.dmp

Filesize
1.0MB

Download
memory/1240-39-0x0000000006BD0000-0x0000000006CD8000-memory.dmp

Filesize
1.0MB

Download
memory/1240-38-0x0000000006BD0000-0x0000000006CD8000-memory.dmp

Filesize
1.0MB

Download
memory/1240-35-0x0000000003D10000-0x0000000003E5F000-memory.dmp

Filesize
1.3MB

Download
memory/1240-26-0x0000000003D10000-0x0000000003E5F000-memory.dmp

Filesize
1.3MB

Download
memory/1240-21-0x0000000006240000-0x00000000063DD000-memory.dmp

Filesize
1.6MB

Download
memory/2076-12-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2076-14-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2076-15-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2076-10-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2076-17-0x0000000000AA0000-0x0000000000DA3000-memory.dmp

Filesize
3.0MB

Download
memory/2076-19-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2076-20-0x0000000000140000-0x0000000000155000-memory.dmp

Filesize
84KB

Download
memory/2076-24-0x00000000001F0000-0x0000000000205000-memory.dmp

Filesize
84KB

Download
memory/2076-23-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2488-31-0x0000000000080000-0x00000000000AF000-memory.dmp

Filesize
188KB

Download
memory/2488-37-0x0000000000A30000-0x0000000000AC4000-memory.dmp

Filesize
592KB

Download
memory/2488-30-0x0000000002380000-0x0000000002683000-memory.dmp

Filesize
3.0MB

Download
memory/2488-27-0x0000000000F70000-0x0000000000F77000-memory.dmp

Filesize
28KB

Download
memory/2488-28-0x0000000000F70000-0x0000000000F77000-memory.dmp

Filesize
28KB

Download
memory/2488-29-0x0000000000080000-0x00000000000AF000-memory.dmp

Filesize
188KB

Download
memory/2992-9-0x00000000020F0000-0x00000000020FA000-memory.dmp

Filesize
40KB

Download
memory/2992-0-0x0000000074150000-0x000000007483E000-memory.dmp

Filesize
6.9MB

Download
memory/2992-8-0x0000000002390000-0x00000000023D0000-memory.dmp

Filesize
256KB

Download
memory/2992-16-0x0000000074150000-0x000000007483E000-memory.dmp

Filesize
6.9MB

Download
memory/2992-7-0x0000000002390000-0x00000000023D0000-memory.dmp

Filesize
256KB

Download
memory/2992-6-0x0000000002390000-0x00000000023D0000-memory.dmp

Filesize
256KB

Download
memory/2992-5-0x0000000074150000-0x000000007483E000-memory.dmp

Filesize
6.9MB

Download
memory/2992-4-0x00000000049C0000-0x0000000004A76000-memory.dmp

Filesize
728KB

Download
memory/2992-3-0x0000000002390000-0x00000000023D0000-memory.dmp

Filesize
256KB

Download
memory/2992-2-0x0000000004A70000-0x0000000004B26000-memory.dmp

Filesize
728KB

Download
memory/2992-1-0x0000000002390000-0x00000000023D0000-memory.dmp

Filesize
256KB

Download

Analysis

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