MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 2ef41da6731f4164de8d3281a4b296965e8a34426f88e47cbfd44a5177419c5c. 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: 10


Intelligence 10 IOCs YARA 1 File information Comments 1

SHA256 hash: 2ef41da6731f4164de8d3281a4b296965e8a34426f88e47cbfd44a5177419c5c
SHA3-384 hash: c0fe7b53a88d8778463acc996d6f44fcf0bc00345c1ab20ed45e1bc3dfb958c0367c6c27c587b8f9951bd3dbc3d2d94e
SHA1 hash: a65d12d45d840262d1d79b595ba6be0288efaab5
MD5 hash: 8ec1bcc446399823a677217d3063562b
humanhash: cola-winner-texas-massachusetts
File name:ojife.com
Download: download sample
Signature FormBook
File size:2'222'247 bytes
First seen:2021-04-23 13:17:42 UTC
Last seen:2021-04-23 13:59:42 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash ced282d9b261d1462772017fe2f6972b (127 x Formbook, 113 x GuLoader, 70 x RemcosRAT)
ssdeep 49152:TD6X6lTSdWVFW5H6tXGqECl3VkMPfWogS6lkglTTpi:TBlTSwHWSXgAkMPf3vgTTg
Threatray 4'710 similar samples on MalwareBazaar
TLSH 6BA5E0747504D89BE52B0DF64C2FA47060AB3E9CA498E40D34A57F6A64F335610AFF8B
Reporter GovCERT_CH
Tags:FormBook

Intelligence


File Origin
# of uploads :
3
# of downloads :
139
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
bibviv.com
Verdict:
Malicious activity
Analysis date:
2021-04-22 04:08:13 UTC
Tags:
trojan formbook stealer

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Creating a file in the %AppData% subdirectories
Creating a process from a recently created file
DNS request
Sending a UDP request
Launching a process
Launching cmd.exe command interpreter
Unauthorized injection to a system process
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.spyw.evad
Score:
100 / 100
Signature
C2 URLs / IPs found in malware configuration
Detected FormBook malware
Found malware configuration
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
PE file has a writeable .text section
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Sigma detected: Steal Google chrome login data
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
System process connects to network (likely due to code injection or exploit)
Tries to detect virtualization through RDTSC time measurements
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file access)
Yara detected FormBook
Behaviour
Behavior Graph:
behaviorgraph top1 signatures2 2 Behavior Graph ID: 396270 Sample: bibviv.com Startdate: 23/04/2021 Architecture: WINDOWS Score: 100 54 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->54 56 Found malware configuration 2->56 58 Malicious sample detected (through community Yara rule) 2->58 60 6 other signatures 2->60 10 bibviv.exe 43 2->10         started        process3 file4 38 C:\Users\user\...\XSplitBroadcaster.exe, PE32 10->38 dropped 40 C:\Users\user\AppData\...\libssp-0.dll, PE32+ 10->40 dropped 42 C:\Users\user\AppData\...\libgcc_s_dw2-1.dll, PE32 10->42 dropped 44 7 other files (none is malicious) 10->44 dropped 13 XSplitBroadcaster.exe 1 10->13         started        process5 signatures6 70 Multi AV Scanner detection for dropped file 13->70 72 Modifies the context of a thread in another process (thread injection) 13->72 74 Maps a DLL or memory area into another process 13->74 76 3 other signatures 13->76 16 explorer.exe 3 13->16 injected process7 dnsIp8 48 milkweedmagic.com 66.235.200.146, 49727, 49728, 49729 CLOUDFLARENETUS United States 16->48 50 www.milkweedmagic.com 16->50 52 System process connects to network (likely due to code injection or exploit) 16->52 20 explorer.exe 1 18 16->20         started        24 XSplitBroadcaster.exe 16->24         started        26 XSplitBroadcaster.exe 16->26         started        signatures9 process10 file11 34 C:\Users\user\AppData\...\886logrv.ini, data 20->34 dropped 36 C:\Users\user\AppData\...\886logri.ini, data 20->36 dropped 62 Detected FormBook malware 20->62 64 Tries to steal Mail credentials (via file access) 20->64 66 Tries to harvest and steal browser information (history, passwords, etc) 20->66 68 3 other signatures 20->68 28 cmd.exe 2 20->28         started        signatures12 process13 file14 46 C:\Users\user\AppData\Local\Temp\DB1, SQLite 28->46 dropped 78 Tries to harvest and steal browser information (history, passwords, etc) 28->78 32 conhost.exe 28->32         started        signatures15 process16
Threat name:
Win32.Trojan.Ymacco
Status:
Malicious
First seen:
2021-04-22 03:30:38 UTC
AV detection:
23 of 47 (48.94%)
Threat level:
  5/5
Result
Malware family:
formbook
Score:
  10/10
Tags:
family:formbook persistence rat spyware stealer trojan
Behaviour
Gathers network information
Modifies Internet Explorer settings
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Adds Run key to start application
Loads dropped DLL
Adds policy Run key to start application
Executes dropped EXE
Formbook Payload
Formbook
Malware Config
C2 Extraction:
http://www.hollandhousedesigns.design/vns/
Unpacked files
SH256 hash:
b108e0ad72b9325ae62a2bae2d8201054f8fe8980c65d8927397015e77b3b512
MD5 hash:
c16c908e788b4150d62b2a24bd49d6fe
SHA1 hash:
54ee3ff7c31fb96f55f5d00002b5dfa83d5632b6
SH256 hash:
de0fdbfb4a569cbdea36f6603fd18e1dd6ec6e31e07c5b0ecda6d44bf8e0b2d9
MD5 hash:
90f2da72d7369306af309c82c59a9991
SHA1 hash:
1a9951a140792d0297f1dc19641062a0740c513e
SH256 hash:
2ef41da6731f4164de8d3281a4b296965e8a34426f88e47cbfd44a5177419c5c
MD5 hash:
8ec1bcc446399823a677217d3063562b
SHA1 hash:
a65d12d45d840262d1d79b595ba6be0288efaab5
Please note that we are no longer able to provide a coverage score for Virus Total.

YARA Signatures


MalwareBazaar uses YARA rules from several public and non-public repositories, such as YARAhub and Malpedia. Those are being matched against malware samples uploaded to MalwareBazaar as well as against any suspicious process dumps they may create. Please note that only results from TLP:CLEAR rules are being displayed.

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.

85eaaef95b9f5b8425eb72bc06dcffa3eae441fa9b0f06a3f4c8c8fe3c9c2033

FormBook

Executable exe 2ef41da6731f4164de8d3281a4b296965e8a34426f88e47cbfd44a5177419c5c

(this sample)

  
Dropped by
MD5 88f807c3009dc287316abead979a0dd9
  
Dropped by
SHA256 85eaaef95b9f5b8425eb72bc06dcffa3eae441fa9b0f06a3f4c8c8fe3c9c2033
  
Delivery method
Distributed via e-mail attachment

Comments



Avatar
a̵c̵c̸i̵d̷e̵n̷t̴a̷l̴r̵e̷b̸e̴l̸ commented on 2021-04-23 14:02:42 UTC

============================================================
MBC behaviors list (github.com/accidentalrebel/mbcscan):
============================================================
0) [B0001.032] Anti-Behavioral Analysis::Timing/Delay Check GetTickCount
1) [C0032.001] Data Micro-objective::CRC32::Checksum
2) [C0026.002] Data Micro-objective::XOR::Encode Data
5) [C0045] File System Micro-objective::Copy File
6) [C0046] File System Micro-objective::Create Directory
7) [C0048] File System Micro-objective::Delete Directory
8) [C0047] File System Micro-objective::Delete File
9) [C0049] File System Micro-objective::Get File Attributes
10) [C0051] File System Micro-objective::Read File
11) [C0050] File System Micro-objective::Set File Attributes
12) [C0052] File System Micro-objective::Writes File
13) [E1510] Impact::Clipboard Modification
14) [C0034.001] Operating System Micro-objective::Set Variable::Environment Variable
15) [C0036.004] Operating System Micro-objective::Create Registry Key::Registry
16) [C0036.002] Operating System Micro-objective::Delete Registry Key::Registry
17) [C0036.007] Operating System Micro-objective::Delete Registry Value::Registry
18) [C0036.003] Operating System Micro-objective::Open Registry Key::Registry
19) [C0036.005] Operating System Micro-objective::Query Registry Key::Registry
20) [C0036.006] Operating System Micro-objective::Query Registry Value::Registry
21) [C0036.001] Operating System Micro-objective::Set Registry Key::Registry
22) [C0017] Process Micro-objective::Create Process
23) [C0038] Process Micro-objective::Create Thread
24) [C0018] Process Micro-objective::Terminate Process