f856bcab6dc2d2c4a047202d301f23b6b9e9ffe5ef5c85b5431bff69442ae95f

Analysis

max time kernel
598s
max time network
600s
platform
windows10-2004_x64
resource
win10v2004-20260513-ja
resource tags

arch:x64arch:x86image:win10v2004-20260513-jalocale:ja-jpos:windows10-2004-x64systemwindows
submitted
04/08/2026, 18:27

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General

Target
PdfcOrE8.dll
Size 3.8MB
Sample260804-w3tehsxdkf
SHA256 f856bcab6dc2d2c4a047202d301f23b6b9e9ffe5ef5c85b5431bff69442ae95f
MD5 7125e2d1c3f52a4217adbe4140a1c36f
SHA1 08a9b79fd07a624aa9d74eb76059d2a89ba08bf1
SHA512 3f2537b9486cfbbe376c7d8d28315efb804713f061dc5f624b8705eb41a8be8d50ec082aca325f56c789477144da7bf0bb792bd3cce9598f9df04e81be54fafb
SSDEEP 98304:UxXIrHdD52XJXi6zfBboqhpkLxLArdxOrxSLgkfjsSzPyiAbA:UxW9D5+XroqhpYxLArDMxLkfIsEs
TLSH
T15006D0013541C07BD5EF1E305A39BAB9F2BDFA7006F500CF36D4A799297289385267AB
MD5 SHA1 SHA512 SSDEEP TLSH

Score

8^/10

discovery

Malware Config

Signatures

Badlisted process makes network request 29 IoCs

Network request originating from process or tool commonly abused by malware.

flow	pid	Process
7	3736	rundll32.exe
11	3736	rundll32.exe
12	3736	rundll32.exe
20	3736	rundll32.exe
22	3736	rundll32.exe
30	3736	rundll32.exe
36	3736	rundll32.exe
61	3736	rundll32.exe
68	3736	rundll32.exe
69	3736	rundll32.exe
70	3736	rundll32.exe
71	3736	rundll32.exe
72	3736	rundll32.exe
78	3736	rundll32.exe
81	3736	rundll32.exe
82	3736	rundll32.exe
83	3736	rundll32.exe
84	3736	rundll32.exe
85	3736	rundll32.exe
88	3736	rundll32.exe
89	3736	rundll32.exe
90	3736	rundll32.exe
91	3736	rundll32.exe
92	3736	rundll32.exe
94	3736	rundll32.exe
95	3736	rundll32.exe
96	3736	rundll32.exe
99	3736	rundll32.exe
100	3736	rundll32.exe

System Location Discovery: System Language Discovery 1 TTPs 1 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	rundll32.exe

Suspicious use of WriteProcessMemory 1 IoCs

description	pid	Process	procid_target
PID 2528 wrote to memory of 3736	2528	rundll32.exe	87

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\PdfcOrE8.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2528
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\PdfcOrE8.dll,#1
  2⤵
  - Badlisted process makes network request
  - System Location Discovery: System Language Discovery
  PID:3736

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

f0a9c774-4643-48cb-b72c-f3f44c23fb40[1].json

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\D6NN03DP\f0a9c774-4643-48cb-b72c-f3f44c23fb40[1].json
Size 88B
SHA256 24d3b24ad60e1ee26bce45e7bab18698dd9f4601ec5ee27f6e8f93dc320babdd
MD5 ab2c255de52ca5207c8d1814b56daac4
SHA1 d25552f5fd349d74311f5194126ca2b469f0ba3a
SHA512 2339ab8eeba220b2504e88dbde25c106759fc80c92e20666be2dda062ca82057ac5891de0c87a247370143f52e4121971170dd86c624617998a5c4a639f7110e
TLSH
T12CB012B0B342304445396139890114E0041F0113440CCC3941218C60010C0273C24513
MD5 SHA1 SHA512 TLSH

Submit Download

segoeui-vf-display.BxQqxUD_[1].woff2

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\GF2Q29DT\segoeui-vf-display.BxQqxUD_[1].woff2
Size 118KB
SHA256 98cbef7ed37298ede5c635e8b58b4f8d89b6c2211a4d10b6723118f0812b87e2
MD5 5c8aa5a64fed9dfbbc13261567c5d890
SHA1 0c89ea5a55eb53d37a0a196f02af34bd2f140376
SHA512 46468f5f245a48c4d2bdea87015b1caeb56c86bf33bb3e0c94f4672b93d7dd46e618493e589d3bc231527b92b3909552e976f38fe6d159483cace94b88bb344f
SSDEEP 3072:UGc/UmuFO6UIK4TXP5GdjGYVrx9pywimZKPQvXLIWMZ1:Y5eKuXkdjGYVr5ywRrDIW+1
TLSH
T180C312B64F36276656A2F8B63D50B2F1D96443093B712477C53D91CCFB8D084C48ABBA
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

2c3f3c46bd764335beec466a0acfde0e-png-w639[1].avif

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\YK6WTHFY\2c3f3c46bd764335beec466a0acfde0e-png-w639[1].avif
Size 21KB
SHA256 b63fe4974797e62d3f3c858af8edb0f3372e025546bd2546f97bdbc965c42db2
MD5 5539a18d3933f1cd3f8fe1ba70a62e6e
SHA1 09fd39ae79c38def6f3e9950aefbe25dff2c8252
SHA512 4cedb4a01ceef0e6303721cce5828e638417a01a2256b75c53bd55618b98b84afe9dabf6b7f6b4a8a4f4c5b382d6f2ae821b72b72e22464e32845ce36d4b5006
SSDEEP 384:rxoPot9fJ1onzJQn9yciLXBopp0r2elBcmTotSHONNXQliokZF45+J:1ZgFQyTW8umoeONhkiq5k
TLSH
T147A2E19B25608E0ECEEA7E30DD15530ABD70E7E6845F93360E076BA6C372834927525D
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

bat[1].js

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\YK6WTHFY\bat[1].js
Size 53KB
SHA256 855230e1321917153b6859521e1ccfab0dce7497f88645e73d7e6db9c4bbe3b1
MD5 d9200f6aeb863daa8622d6d04b6439ce
SHA1 27f04243174adb38dc4297bf48df84bd6f81ee4e
SHA512 8bed70ccf60061743fb71be37b2a56cdf918063cd01fb33d0d2edead3e1270b27a2c6d92735c08ceb542c71d4df4b8e2f09c84bc16a0df5a8563f0e33d155e9d
SSDEEP 768:YcMOGhicg/XNIh5HQm3mT1koLQBExf6ybGVGOjJDuOk:TMOGkcgVE34Lbxf6ybGMic
TLSH
T104430B4333509A7646F9419C786A2903A336570E30BE70DC7A8CF8E6945DE4B7237B7A
MD5 SHA1 SHA512 SSDEEP TLSH

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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Downloads