stormser | 2026-08-07_52fe6e2d2f30fd4047fb86ce372a5dd1_elex_remcos_wannacry

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General

Target
2026-08-07_52fe6e2d2f30fd4047fb86ce372a5dd1_elex_remcos_wannacry
Size 79KB
Sample260807-cacfravhle
SHA256 dabaa88c4a6e0de13ac93b2c057a87b100ff2769737aa0c09e8b7f2796f7549f
MD5 52fe6e2d2f30fd4047fb86ce372a5dd1
SHA1 5f28fb841f9c2d0d2a0e57bd1d26a24958c64b5b
SHA512 cb51074ecce41a49b6f7e649c4f6b74c31df9b55aa5446c39558d62e06e7becc5246f6a118cf9191809bc2acfea678033284ea07e48124b8e77961796507311a
SSDEEP 768:4vw9816vhKQLroV4/wQpWMZ3XOQ69zbjlAAX5e9zz:wEGh0oVloWMZ3izbR9Xwzz
TLSH
T1BF834BC38E6C6483FED6297012A8DAA77D3E97C65544B9976F90FC5808A33C1EB3811D
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

worm stormser

Malware Config

Signatures

Family: Stormser, StormDDoS, StormAttack, Stormer
Stormser aka StormDDoS, StormAttack, and Stormer is a Windows worm written in C++.
worm stormser

Detects Stormser aka Storm DDoS and StormAttack 1 IoCs

resource	yara_rule
sample	family_stormser

Detects Windows executables referencing non-Windows User-Agents 1 IoCs

resource	yara_rule
sample	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA

Codesign digest Mismatch 1 IoCs

File was altered after it was signed.

resource
2026-08-07_52fe6e2d2f30fd4047fb86ce372a5dd1_elex_remcos_wannacry

File Explorer

2026-08-07_52fe6e2d2f30fd4047fb86ce372a5dd1_elex_remcos_wannacry

.exe 79KB

2026-08-07_52fe6e2d2f30fd4047fb86ce372a5dd1_elex_remcos_wannacry

IMPHASH ba23a556ac1d6444f7f76feafd6c8867
SHA256 dabaa88c4a6e0de13ac93b2c057a87b100ff2769737aa0c09e8b7f2796f7549f
MD5 52fe6e2d2f30fd4047fb86ce372a5dd1
SHA1 5f28fb841f9c2d0d2a0e57bd1d26a24958c64b5b
SHA512 cb51074ecce41a49b6f7e649c4f6b74c31df9b55aa5446c39558d62e06e7becc5246f6a118cf9191809bc2acfea678033284ea07e48124b8e77961796507311a
SSDEEP 768:4vw9816vhKQLroV4/wQpWMZ3XOQ69zbjlAAX5e9zz:wEGh0oVloWMZ3izbR9Xwzz
TLSH
T1BF834BC38E6C6483FED6297012A8DAA77D3E97C65544B9976F90FC5808A33C1EB3811D
MD5 SHA1 SHA512 SSDEEP TLSH

windows:4 windows x86 arch:x86

Detects Stormser aka Storm DDoS and StormAttack
Detects Windows executables referencing non-Windows User-Agents
Codesign digest Mismatch

File was altered after it was signed.

PE Signature issue

Digest

df:77:20:ea:fe:9f:1a:69:bc:b1:58:e6:49:84:59:c1:40:2a:9f:51:31:c9:35:8d:3f:61:7f:2b:82:9a:50:2f

Digest Algorithm

sha256

PE Digests Matches

Not matched

Trusted

Signing Certificate

CN=Microsoft Corporation,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Chains

Jun 11, 2022

CN=Microsoft Corporation,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

CN=Microsoft Code Signing PCA 2011,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

CN=Microsoft Root Certificate Authority 2011,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

PE Signature issue

Digest

df:77:20:ea:fe:9f:1a:69:bc:b1:58:e6:49:84:59:c1:40:2a:9f:51:31:c9:35:8d:3f:61:7f:2b:82:9a:50:2f

Digest Algorithm

sha256

PE Digests Matches

Not matched

Trusted

Signing Certificate

CN=Microsoft Corporation,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Chains

Jun 11, 2022

CN=Microsoft Corporation,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

CN=Microsoft Code Signing PCA 2010,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

CN=Microsoft Root Certificate Authority 2010,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Subject

CN=Microsoft Corporation,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Serial Number

33:00:00:04:39:f6:1f:7a:67:6d:a0:00:af:00:00:00:00:04:39

Issuer

CN=Microsoft Code Signing PCA 2010,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Ext Key Usages

ExtKeyUsageCodeSigning

Timespan

Sep 2, 2021 - Sep 1, 2022

Subject

CN=Microsoft Code Signing PCA 2010,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Serial Number

61:0c:52:4c:00:00:00:00:00:03

Issuer

CN=Microsoft Root Certificate Authority 2010,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Key Usages

KeyUsageDigitalSignature, KeyUsageCertSign, KeyUsageCRLSign

Timespan

Jul 6, 2010 - Jul 6, 2025

Subject

CN=Microsoft Time-Stamp Service,OU=Microsoft America Operations+OU=Thales TSS ESN:3BBD-E338-E9A1,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Serial Number

33:00:00:01:9d:fe:89:e5:f9:7b:bb:4c:c0:00:01:00:00:01:9d

Issuer

CN=Microsoft Time-Stamp PCA 2010,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Ext Key Usages

ExtKeyUsageTimeStamping

Timespan

Dec 2, 2021 - Feb 28, 2023

Subject

CN=Microsoft Time-Stamp PCA 2010,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Serial Number

33:00:00:00:15:c5:e7:6b:9e:02:9b:49:99:00:00:00:00:00:15

Issuer

CN=Microsoft Root Certificate Authority 2010,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Key Usages

KeyUsageDigitalSignature, KeyUsageCertSign, KeyUsageCRLSign

Ext Key Usages

ExtKeyUsageTimeStamping

Timespan

Sep 30, 2021 - Sep 30, 2030

Subject

CN=Microsoft Corporation,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Serial Number

33:00:00:02:55:18:1d:a4:2e:e0:86:fc:15:00:00:00:00:02:55

Issuer

CN=Microsoft Code Signing PCA 2011,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Ext Key Usages

ExtKeyUsageCodeSigning

Timespan

Sep 2, 2021 - Sep 1, 2022

Subject

CN=Microsoft Code Signing PCA 2011,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Serial Number

61:0e:90:d2:00:00:00:00:00:03

Issuer

CN=Microsoft Root Certificate Authority 2011,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Key Usages

KeyUsageDigitalSignature, KeyUsageCertSign, KeyUsageCRLSign

Timespan

Jul 8, 2011 - Jul 8, 2026

Subject

CN=Microsoft Time-Stamp Service,OU=Microsoft America Operations+OU=Thales TSS ESN:EACE-E316-C91D,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Serial Number

33:00:00:01:9a:c0:75:a2:c4:21:6d:3e:85:00:01:00:00:01:9a

Issuer

CN=Microsoft Time-Stamp PCA 2010,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Ext Key Usages

ExtKeyUsageTimeStamping

Timespan

Dec 2, 2021 - Feb 28, 2023

Minor OS version

Major OS version

Entry point

9844

Magic Number

267

Subsystem

IMAGE_SUBSYSTEM_WINDOWS_GUI

DLL Characteristics

File Characteristics

IMAGE_FILE_RELOCS_STRIPPED IMAGE_FILE_EXECUTABLE_IMAGE IMAGE_FILE_LINE_NUMS_STRIPPED IMAGE_FILE_LOCAL_SYMS_STRIPPED IMAGE_FILE_32BIT_MACHINE

PDB paths

kernel32

lstrcatA lstrcpyA GetEnvironmentVariableA GetShortPathNameA GetModuleFileNameA GetLastError SetFileAttributesA CopyFileA CloseHandle GetCurrentProcess CreateFileA GlobalFree LockResource GlobalAlloc LoadResource SizeofResource FindResourceA SetPriorityClass GetCurrentThread SetThreadPriority ResumeThread Sleep GetStartupInfoA CreateProcessA lstrlenA VirtualAllocEx WriteProcessMemory GetModuleHandleA GetProcAddress CreateRemoteThread GetSystemWindowsDirectoryA GetSystemDirectoryA WriteFile

user32

MessageBoxA

comdlg32

GetFileTitleA

advapi32

CloseServiceHandle RegOpenKeyExA RegQueryValueExA StartServiceCtrlDispatcherA RegCreateKeyA RegisterServiceCtrlHandlerA SetServiceStatus RegOpenKeyA RegDeleteValueA RegSetValueExA RegCloseKey OpenServiceA CreateServiceA OpenSCManagerA StartServiceA

ole32

CoUninitialize CoCreateGuid CoInitialize

mfc42

ord924 ord800 ord941 ord535 ord537

msvcrt

_controlfp __set_app_type __CxxFrameHandler _snprintf free fwrite fclose fread malloc ftell fseek fopen exit strstr strncmp _except_handler3 __dllonexit _onexit _exit _XcptFilter _acmdln __getmainargs _initterm __setusermatherr _adjust_fdiv __p__commode __p__fmode

msvcp60

??0_Winit@std@@QAE@XZ ??1_Winit@std@@QAE@XZ ??1Init@ios_base@std@@QAE@XZ ??0Init@ios_base@std@@QAE@XZ

Sharing

General

Malware Config

Signatures

File Explorer

2026-08-07_52fe6e2d2f30fd4047fb86ce372a5dd1_elex_remcos_wannacry

PE Signature issue

PE Signature issue

kernel32

user32

comdlg32

advapi32

ole32

mfc42

msvcrt

msvcp60

generic