formbook | 7901bf81c76750852633b88e18f789ea4e7a599bdbe0fdb813a3009cafc30366

General

Target

4500295678.exe
Size

763KB
MD5

0294badebae62dd7e03d329fb35b2395
SHA1

e44bae4b5c71c79a11c22fe97d45bb027822b4cd
SHA256

7d51363f1fc990710be0a463a7123a5c5cbe532e81164b1c43d4a159a89dadeb
SHA512

fd53e307148a44af3c03025591bfe7a5e6e95daf25dc3eb089f2c4ebdedf1357ce1c4f7970c56ceba3cacf04caea53acac242d21e296126316d98cdf369157e8
SSDEEP

12288:gTkSi8uZXy8E6AvHiCx62iNOIFDWfAK1LkD+4oGN/XgYOHK6+kLcz3hi3pm+P0/Q:x18uNy8UaC619FDWIXy4oGA3+eY3hkmi

Score

10^/10

formbook xloader zzun discovery loader rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Campaign

zzun

Decoy

JnNtRHyNupy0GqRzAcasu7hb4rc=

Qv593NGLE7p9UNSaVkPXljAJm2QCNnc=

ePArIFWvjkkMgVEVhw4M4Jk=

26rqUwJ7dD0AiDI=

pBAxMHeK741QFw==

kHD7TPt5846pUMTX

56UnjFjHL1i0j659h3LymRnHpQj+SshC

4vKlKHflPqmWXRbrRwfPtrhb4rc=

6LBd4qButFAi

phMzGll8Ue7Fu+inq5cdnPaSugG3

NKswiQGCvZoG5FgsdHEI

rtTHnuUY8M1qVcXV

SOmECrlAt2oGAA==

L1ep9adutFAi

/UE+/AyvE6uEl28weFI=

IP+xMPQxJR4NE6TK

xvW5GN9/rqA5YUoOVt185Sf7Uw==

fRFNW9DhxL6VF7LA

KFYTfkaY741QFw==

W4JGvMBmt2oGAA==

Extracted

Family

xloader

Version

2.9

Campaign

zzun

Decoy

JnNtRHyNupy0GqRzAcasu7hb4rc=

Qv593NGLE7p9UNSaVkPXljAJm2QCNnc=

ePArIFWvjkkMgVEVhw4M4Jk=

26rqUwJ7dD0AiDI=

pBAxMHeK741QFw==

kHD7TPt5846pUMTX

56UnjFjHL1i0j659h3LymRnHpQj+SshC

4vKlKHflPqmWXRbrRwfPtrhb4rc=

6LBd4qButFAi

phMzGll8Ue7Fu+inq5cdnPaSugG3

NKswiQGCvZoG5FgsdHEI

rtTHnuUY8M1qVcXV

SOmECrlAt2oGAA==

L1ep9adutFAi

/UE+/AyvE6uEl28weFI=

IP+xMPQxJR4NE6TK

xvW5GN9/rqA5YUoOVt185Sf7Uw==

fRFNW9DhxL6VF7LA

KFYTfkaY741QFw==

W4JGvMBmt2oGAA==

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 3 IoCs

rat

resource	yara_rule
behavioral1/memory/2992-12-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral1/memory/2992-16-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral1/memory/2624-23-0x00000000000C0000-0x00000000000EC000-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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2039016743-699959520-214465309-1000\Control Panel\International\Geo\Nation	4500295678.exe

Deletes itself 1 IoCs

pid	Process
2488	cmd.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2372 set thread context of 2992	2372	4500295678.exe	30
PID 2992 set thread context of 1196	2992	4500295678.exe	21
PID 2624 set thread context of 1196	2624	svchost.exe	21

System Location Discovery: System Language Discovery 1 TTPs 3 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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4500295678.exe

Suspicious behavior: EnumeratesProcesses 26 IoCs

pid	Process
2992	4500295678.exe
2992	4500295678.exe
2624	svchost.exe
2624	svchost.exe
2624	svchost.exe
2624	svchost.exe
2624	svchost.exe
2624	svchost.exe
2624	svchost.exe
2624	svchost.exe
2624	svchost.exe
2624	svchost.exe
2624	svchost.exe
2624	svchost.exe
2624	svchost.exe
2624	svchost.exe
2624	svchost.exe
2624	svchost.exe
2624	svchost.exe
2624	svchost.exe
2624	svchost.exe
2624	svchost.exe
2624	svchost.exe
2624	svchost.exe
2624	svchost.exe
2624	svchost.exe

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
2992	4500295678.exe
2992	4500295678.exe
2992	4500295678.exe
2624	svchost.exe
2624	svchost.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2992	4500295678.exe
Token: SeDebugPrivilege	2624	svchost.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2372 wrote to memory of 2992	2372	4500295678.exe	30
PID 2372 wrote to memory of 2992	2372	4500295678.exe	30
PID 2372 wrote to memory of 2992	2372	4500295678.exe	30
PID 2372 wrote to memory of 2992	2372	4500295678.exe	30
PID 2372 wrote to memory of 2992	2372	4500295678.exe	30
PID 2372 wrote to memory of 2992	2372	4500295678.exe	30
PID 2372 wrote to memory of 2992	2372	4500295678.exe	30
PID 1196 wrote to memory of 2624	1196	Explorer.EXE	31
PID 1196 wrote to memory of 2624	1196	Explorer.EXE	31
PID 1196 wrote to memory of 2624	1196	Explorer.EXE	31
PID 1196 wrote to memory of 2624	1196	Explorer.EXE	31
PID 2624 wrote to memory of 2488	2624	svchost.exe	32
PID 2624 wrote to memory of 2488	2624	svchost.exe	32
PID 2624 wrote to memory of 2488	2624	svchost.exe	32
PID 2624 wrote to memory of 2488	2624	svchost.exe	32

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1196
- C:\Users\Admin\AppData\Local\Temp\4500295678.exe
  "C:\Users\Admin\AppData\Local\Temp\4500295678.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2372
- - C:\Users\Admin\AppData\Local\Temp\4500295678.exe
    "{path}"
    3⤵
    - Checks computer location settings
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:2992
- C:\Windows\SysWOW64\svchost.exe
  "C:\Windows\SysWOW64\svchost.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2624
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\4500295678.exe"
    3⤵
    - Deletes itself
    - System Location Discovery: System Language Discovery
    PID:2488

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/1196-19-0x00000000064A0000-0x0000000006584000-memory.dmp

Filesize
912KB

Download
memory/1196-24-0x00000000064A0000-0x0000000006584000-memory.dmp

Filesize
912KB

Download
memory/2372-6-0x0000000005300000-0x0000000005382000-memory.dmp

Filesize
520KB

Download
memory/2372-3-0x00000000002F0000-0x0000000000302000-memory.dmp

Filesize
72KB

Download
memory/2372-4-0x0000000074E8E000-0x0000000074E8F000-memory.dmp

Filesize
4KB

Download
memory/2372-5-0x0000000074E80000-0x000000007556E000-memory.dmp

Filesize
6.9MB

Download
memory/2372-2-0x0000000074E80000-0x000000007556E000-memory.dmp

Filesize
6.9MB

Download
memory/2372-7-0x0000000000D90000-0x0000000000DC2000-memory.dmp

Filesize
200KB

Download
memory/2372-1-0x00000000011F0000-0x00000000012B4000-memory.dmp

Filesize
784KB

Download
memory/2372-0-0x0000000074E8E000-0x0000000074E8F000-memory.dmp

Filesize
4KB

Download
memory/2372-13-0x0000000074E80000-0x000000007556E000-memory.dmp

Filesize
6.9MB

Download
memory/2624-23-0x00000000000C0000-0x00000000000EC000-memory.dmp

Filesize
176KB

Download
memory/2624-22-0x0000000000780000-0x0000000000788000-memory.dmp

Filesize
32KB

Download
memory/2624-20-0x0000000000780000-0x0000000000788000-memory.dmp

Filesize
32KB

Download
memory/2992-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2992-16-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/2992-17-0x0000000000210000-0x0000000000221000-memory.dmp

Filesize
68KB

Download
memory/2992-14-0x0000000000870000-0x0000000000B73000-memory.dmp

Filesize
3.0MB

Download
memory/2992-9-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/2992-12-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/2992-8-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads