MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 38acc90cd6d33b61b99cca8cf06781e1bd2ab8ffebc3a33e036eca36037d413b. While MalwareBazaar tries to identify whether the sample provided is malicious or not, there is no guarantee that a sample in MalwareBazaar is malicious.

Database Entry



Formbook


Vendor detections: 11


Intelligence 11 File information Yara 1 Comments

SHA256 hash: 38acc90cd6d33b61b99cca8cf06781e1bd2ab8ffebc3a33e036eca36037d413b
SHA3-384 hash: eac0f1fe176be49a900da18641205cc02dcdf18c5385d320b52cc13125db47be5239b118471870749f9931c122d8b8b3
SHA1 hash: d9e750061417b0ca9f933db79c99c12934abbe84
MD5 hash: e40af9745e938b72d5d860bbc679aebf
humanhash: autumn-mountain-ink-muppet
File name:PO_210223.exe
Download: download sample
Signature Formbook
File size:802'304 bytes
First seen:2021-02-23 07:21:58 UTC
Last seen:2021-02-23 08:45:55 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744
ssdeep 12288:9ORam/OrNbZTlgJqfsRVeh58JtAZUdt4odT9YdxOI/aFOAhIE+TtORqH4O4H1rVR:QFiJNlFfdkP4odidxTCEd2
Threatray 3'898 similar samples on MalwareBazaar
TLSH 7D05289D3650B6DEC967CD76C9982C64EBA074BB830BD283A05301EDDA4DA97DF140F2
Reporter @abuse_ch
Tags:exe FormBook geo KOR


Twitter
@abuse_ch
Malspam distributing unidentified malware:

HELO: mail-smail-vm81.hanmail.net
Sending IP: 211.231.106.156
From: 동인기업 <donginent@daum.net>
Subject: (긴급건) 견적 요청 드립니다.
Attachment: PO_210223.cab (contains "PO_210223.exe")

Intelligence


File Origin
# of uploads :
2
# of downloads :
79
Origin country :
FR FR
Mail intelligence
Geo location:
Global
Volume:
Low
Vendor Threat Intelligence
Result
Verdict:
Clean
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
Result
Verdict:
MALICIOUS
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Result
Threat name:
FormBook
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Signature
C2 URLs / IPs found in malware configuration
Detected unpacking (changes PE section rights)
Detected unpacking (overwrites its own PE header)
Found malware configuration
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
Modifies the context of a thread in another process (thread injection)
Modifies the prolog of user mode functions (user mode inline hooks)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Sigma detected: Scheduled temp file as task from temp location
System process connects to network (likely due to code injection or exploit)
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to detect virtualization through RDTSC time measurements
Uses ipconfig to lookup or modify the Windows network settings
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AntiVM_3
Yara detected FormBook
Behaviour
Behavior Graph:
behaviorgraph top1 signatures2 2 Behavior Graph ID: 356494 Sample: PO_210223.exe Startdate: 23/02/2021 Architecture: WINDOWS Score: 100 46 Found malware configuration 2->46 48 Malicious sample detected (through community Yara rule) 2->48 50 Multi AV Scanner detection for dropped file 2->50 52 12 other signatures 2->52 10 PO_210223.exe 7 2->10         started        process3 file4 32 C:\Users\user\AppData\Roaming\kwqifureL.exe, PE32 10->32 dropped 34 C:\Users\...\kwqifureL.exe:Zone.Identifier, ASCII 10->34 dropped 36 C:\Users\user\AppData\Local\...\tmp33D2.tmp, XML 10->36 dropped 38 C:\Users\user\AppData\...\PO_210223.exe.log, ASCII 10->38 dropped 62 Detected unpacking (changes PE section rights) 10->62 64 Detected unpacking (overwrites its own PE header) 10->64 66 Tries to detect virtualization through RDTSC time measurements 10->66 68 Injects a PE file into a foreign processes 10->68 14 PO_210223.exe 10->14         started        17 schtasks.exe 1 10->17         started        signatures5 process6 signatures7 70 Modifies the context of a thread in another process (thread injection) 14->70 72 Maps a DLL or memory area into another process 14->72 74 Sample uses process hollowing technique 14->74 76 Queues an APC in another process (thread injection) 14->76 19 explorer.exe 14->19 injected 23 conhost.exe 17->23         started        process8 dnsIp9 40 www.pophazard.com 204.11.56.48, 49763, 80 CONFLUENCE-NETWORK-INCVG Virgin Islands (BRITISH) 19->40 42 sll.nnu.pw 103.66.59.142, 49765, 80 CNSERVERSUS Hong Kong 19->42 44 3 other IPs or domains 19->44 54 System process connects to network (likely due to code injection or exploit) 19->54 25 ipconfig.exe 19->25         started        signatures10 process11 signatures12 56 Modifies the context of a thread in another process (thread injection) 25->56 58 Maps a DLL or memory area into another process 25->58 60 Tries to detect virtualization through RDTSC time measurements 25->60 28 cmd.exe 1 25->28         started        process13 process14 30 conhost.exe 28->30         started       
Threat name:
ByteCode-MSIL.Spyware.Noon
Status:
Malicious
First seen:
2021-02-23 07:22:18 UTC
AV detection:
20 of 47 (42.55%)
Threat level
  2/5
Result
Malware family:
formbook
Score:
  10/10
Tags:
family:formbook rat spyware stealer trojan
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Deletes itself
Formbook Payload
Formbook
Malware Config
C2 Extraction:
http://www.000666dy.com/ntg/
Unpacked files
SH256 hash:
e624003658c4f8b349f567c82229fd15d1e63d3d20fe6f7b4388403038cd2a44
MD5 hash:
b6ce7c1d81b9271eab825ea63de154c3
SHA1 hash:
0e7b89555314f8908c1098b652c9bf50e5ecc27b
SH256 hash:
38acc90cd6d33b61b99cca8cf06781e1bd2ab8ffebc3a33e036eca36037d413b
MD5 hash:
e40af9745e938b72d5d860bbc679aebf
SHA1 hash:
d9e750061417b0ca9f933db79c99c12934abbe84
Threat name:
Suspicious File
Score:
0.51

Yara Signatures


Rule name:INDICATOR_SUSPICIOUS_Stomped_PECompilation_Timestamp_InTheFuture
Author:ditekSHen
Description:Detect executables with stomped PE compilation timestamp that is greater than local current time

File information


The table below shows additional information about this malware sample such as delivery method and external references.

Malspam

Formbook

Executable exe 38acc90cd6d33b61b99cca8cf06781e1bd2ab8ffebc3a33e036eca36037d413b

(this sample)

  
Delivery method
Distributed via e-mail attachment

Comments