formbook | 491a2083c1bfd87c4b26dd687316b7fc50e2a35771e57e45769043d21bc8bca5

General

Target

nuevo orden.xlsx.exe
Size

741KB
MD5

b414629b844d0a8cf08cd22d175a82f6
SHA1

0d9f83e40a924ba16e9bde6f3d2b5dbc19056703
SHA256

6124faef534c43b40607b85ffc1798cb3064d7eb2239422d2b35826a6de5e3ee
SHA512

d4e6f4f21b5426dcbac8d53feb96155202d9f09ac51299c3b3d02b7d5163f6043e175e9f36ea08503de98aad21ff5ff1dcc0a68e8ab4cfad4a279795720f6c53
SSDEEP

12288:qG2AZMzJWsuhczRVQEIcA3Q9UJwUIscc1FOg9Y9jg0Fl6p+liq+c:qG21JnuizRV7lUJgog

Score

10^/10

formbook xloader f3bq discovery loader rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Campaign

f3bq

Decoy

EycW4KsHurZ80uRoO5Ci7qqvYA==

qTeo+vvLiXtITF++qA==

aN69k0COUW1Xt8xTIGl1GX59NYoXPHZh

WHDM3u/Jyu6xx5lEtISl7qqvYA==

TOlj27idD7p4MYTE/Dg=

AC71rZJwmD0TY/VK

iysL+SA+7FMTY/VK

N9e+ns2plwr+0C83ztRc

6OQtlIdjkAvFqzE3ztRc

39k8+W7n0llTNYTE/Dg=

lq0Y/ktyn0MDx01CfsfvG7U9PPw=

3nxaPQRrFwnWKDC65zBq+Q==

R9OzJ70qqVH/f7b0URQN4fTL

9zWtmE24YYxslCdqsboN4fTL

oTchmfxOEi4wtQ0S7PvY0Xo=

HrCsl9K1sdiImmzWGO4ijiPpdw==

rFQw9LEwYAcIBNU3ztRc

Z50ArBOKdqETY/VK

T0mvicHsMFkHw0o=

Yw/oyfoe2flkp5Me82IED5nEG9gYYQ==

Signatures

Formbook
Formbook is a data stealing malware which is capable of stealing data.
trojan spyware stealer formbook
Formbook family
formbook
Xloader
Xloader is a rebranded version of Formbook malware.
loader xloader
Xloader family
xloader

Xloader payload 2 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/2504-13-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral1/memory/2504-17-0x0000000000400000-0x000000000042C000-memory.dmp	xloader

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:

nuevo orden.xlsx.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2039016743-699959520-214465309-1000\Control Panel\International\Geo\Nation	nuevo orden.xlsx.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

nuevo orden.xlsx.exenuevo orden.xlsx.exe

description	pid	process	target process
PID 2588 set thread context of 2504	2588	nuevo orden.xlsx.exe	nuevo orden.xlsx.exe
PID 2504 set thread context of 1192	2504	nuevo orden.xlsx.exe	Explorer.EXE

Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

2784 2544 WerFault.exe msiexec.exe

pid	pid_target	process	target process
2784	2544	WerFault.exe	msiexec.exe

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

Processes:

nuevo orden.xlsx.exemsiexec.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	nuevo orden.xlsx.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	msiexec.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

nuevo orden.xlsx.exe

pid process

2504 nuevo orden.xlsx.exe
2504 nuevo orden.xlsx.exe
Suspicious behavior: MapViewOfSection 3 IoCs

Processes:

nuevo orden.xlsx.exe

pid process

2504 nuevo orden.xlsx.exe
2504 nuevo orden.xlsx.exe
2504 nuevo orden.xlsx.exe

pid	process
2504	nuevo orden.xlsx.exe
2504	nuevo orden.xlsx.exe

pid	process
2504	nuevo orden.xlsx.exe
2504	nuevo orden.xlsx.exe
2504	nuevo orden.xlsx.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

nuevo orden.xlsx.exeExplorer.EXE

description	pid	process
Token: SeDebugPrivilege	2504	nuevo orden.xlsx.exe
Token: SeShutdownPrivilege	1192	Explorer.EXE
Token: SeShutdownPrivilege	1192	Explorer.EXE
Token: SeShutdownPrivilege	1192	Explorer.EXE

Suspicious use of WriteProcessMemory 18 IoCs

Processes:

nuevo orden.xlsx.exeExplorer.EXEmsiexec.exe

description	pid	process	target process
PID 2588 wrote to memory of 2504	2588	nuevo orden.xlsx.exe	nuevo orden.xlsx.exe
PID 2588 wrote to memory of 2504	2588	nuevo orden.xlsx.exe	nuevo orden.xlsx.exe
PID 2588 wrote to memory of 2504	2588	nuevo orden.xlsx.exe	nuevo orden.xlsx.exe
PID 2588 wrote to memory of 2504	2588	nuevo orden.xlsx.exe	nuevo orden.xlsx.exe
PID 2588 wrote to memory of 2504	2588	nuevo orden.xlsx.exe	nuevo orden.xlsx.exe
PID 2588 wrote to memory of 2504	2588	nuevo orden.xlsx.exe	nuevo orden.xlsx.exe
PID 2588 wrote to memory of 2504	2588	nuevo orden.xlsx.exe	nuevo orden.xlsx.exe
PID 1192 wrote to memory of 2544	1192	Explorer.EXE	msiexec.exe
PID 1192 wrote to memory of 2544	1192	Explorer.EXE	msiexec.exe
PID 1192 wrote to memory of 2544	1192	Explorer.EXE	msiexec.exe
PID 1192 wrote to memory of 2544	1192	Explorer.EXE	msiexec.exe
PID 1192 wrote to memory of 2544	1192	Explorer.EXE	msiexec.exe
PID 1192 wrote to memory of 2544	1192	Explorer.EXE	msiexec.exe
PID 1192 wrote to memory of 2544	1192	Explorer.EXE	msiexec.exe
PID 2544 wrote to memory of 2784	2544	msiexec.exe	WerFault.exe
PID 2544 wrote to memory of 2784	2544	msiexec.exe	WerFault.exe
PID 2544 wrote to memory of 2784	2544	msiexec.exe	WerFault.exe
PID 2544 wrote to memory of 2784	2544	msiexec.exe	WerFault.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1192
- C:\Users\Admin\AppData\Local\Temp\nuevo orden.xlsx.exe
  "C:\Users\Admin\AppData\Local\Temp\nuevo orden.xlsx.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2588
- - C:\Users\Admin\AppData\Local\Temp\nuevo orden.xlsx.exe
    "C:\Users\Admin\AppData\Local\Temp\nuevo orden.xlsx.exe"
    3⤵
    - Checks computer location settings
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:2504
- C:\Windows\SysWOW64\msiexec.exe
  "C:\Windows\SysWOW64\msiexec.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2544
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2544 -s 268
    3⤵
    - Program crash
    PID:2784

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/1192-19-0x00000000066D0000-0x00000000067EF000-memory.dmp

Filesize
1.1MB

Download
memory/1192-26-0x00000000066D0000-0x00000000067EF000-memory.dmp

Filesize
1.1MB

Download
memory/2504-7-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/2504-15-0x0000000000B60000-0x0000000000E63000-memory.dmp

Filesize
3.0MB

Download
memory/2504-13-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/2504-11-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2504-9-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/2504-17-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/2504-18-0x00000000003C0000-0x00000000003D1000-memory.dmp

Filesize
68KB

Download
memory/2544-23-0x0000000000690000-0x00000000006A4000-memory.dmp

Filesize
80KB

Download
memory/2544-20-0x0000000000690000-0x00000000006A4000-memory.dmp

Filesize
80KB

Download
memory/2544-21-0x0000000000690000-0x00000000006A4000-memory.dmp

Filesize
80KB

Download
memory/2588-14-0x00000000748C0000-0x0000000074FAE000-memory.dmp

Filesize
6.9MB

Download
memory/2588-3-0x0000000000440000-0x000000000044E000-memory.dmp

Filesize
56KB

Download
memory/2588-0-0x00000000748CE000-0x00000000748CF000-memory.dmp

Filesize
4KB

Download
memory/2588-2-0x00000000748C0000-0x0000000074FAE000-memory.dmp

Filesize
6.9MB

Download
memory/2588-6-0x0000000000850000-0x00000000008A2000-memory.dmp

Filesize
328KB

Download
memory/2588-5-0x000000000A420000-0x000000000A4AA000-memory.dmp

Filesize
552KB

Download
memory/2588-4-0x00000000004A0000-0x00000000004AA000-memory.dmp

Filesize
40KB

Download
memory/2588-1-0x0000000000910000-0x00000000009D0000-memory.dmp

Filesize
768KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads