ryuk | 2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912

General

Target

2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe
Size

193KB
MD5

cfb761465693bd4511f038d8e468e62e
SHA1

c8d64b3d2208a3cf40f4d9c182c9829beaa1eb86
SHA256

2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912
SHA512

2622751f9f5ab89287a1d88c9f027a7117549fcd0280f104a598c7953713d32e6ce5adfdd26abec709e1c848b8bc9f50e5226185721a22d2b3573d2d0264d36c

Score

10^/10

ryuk ransomware

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Local\Temp\RyukReadMe.html

Family

ryuk

Ransom Note

<html><body><p style="font-weight:bold;font-size:125%;top:0;left:0;"> [email protected] <br> </p><p style="position:absolute;bottom:0;right:1%;font-weight:bold;font-size:170%">balance of shadow universe</p><div style="font-size: 550%;font-weight:bold;width:50%;height:50%;overflow:auto;margin:auto;position:absolute;top:35%;left:40%;">Ryuk</div></body></html��

Emails

[email protected]

Extracted

Path

C:\Users\Admin\AppData\Local\Temp\RyukReadMe.html

Family

ryuk

Ransom Note

[email protected] balance of shadow universe Ryuk

Emails

[email protected]

Signatures

Ryuk
Ransomware distributed via existing botnets, often Trickbot or Emotet.
ransomware ryuk
Executes dropped EXE 1 IoCs

Processes:

lsdyXfy.exe

pid process

268 lsdyXfy.exe

pid	process
268	lsdyXfy.exe

Loads dropped DLL 2 IoCs

Processes:

2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe

pid	process
1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe
1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Runs net.exe

Suspicious behavior: EnumeratesProcesses 32 IoCs

Processes:

2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exelsdyXfy.exe

pid	process
1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe
1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe
268	lsdyXfy.exe
1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe
268	lsdyXfy.exe
1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe
268	lsdyXfy.exe
1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe
1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe
1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe
1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe
1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe
1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe
1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe
1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe
1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe
1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe
1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe
1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe
1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe
1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe
1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe
1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe
1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe
1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe
1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe
1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe
1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe
1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe
1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe
1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe
268	lsdyXfy.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exelsdyXfy.exe

description	pid	process
Token: SeBackupPrivilege	1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe
Token: SeBackupPrivilege	268	lsdyXfy.exe

Suspicious use of WriteProcessMemory 64 IoCs

Processes:

2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exelsdyXfy.exenet.exenet.exenet.exenet.exenet.exenet.exenet.exe

description	pid	process	target process
PID 1396 wrote to memory of 268	1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe	lsdyXfy.exe
PID 1396 wrote to memory of 268	1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe	lsdyXfy.exe
PID 1396 wrote to memory of 268	1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe	lsdyXfy.exe
PID 1396 wrote to memory of 268	1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe	lsdyXfy.exe
PID 268 wrote to memory of 2136	268	lsdyXfy.exe	net.exe
PID 1396 wrote to memory of 2144	1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe	net.exe
PID 268 wrote to memory of 2136	268	lsdyXfy.exe	net.exe
PID 1396 wrote to memory of 2144	1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe	net.exe
PID 268 wrote to memory of 2136	268	lsdyXfy.exe	net.exe
PID 1396 wrote to memory of 2144	1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe	net.exe
PID 268 wrote to memory of 2136	268	lsdyXfy.exe	net.exe
PID 1396 wrote to memory of 2144	1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe	net.exe
PID 1396 wrote to memory of 2128	1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe	net.exe
PID 1396 wrote to memory of 2128	1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe	net.exe
PID 1396 wrote to memory of 2128	1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe	net.exe
PID 1396 wrote to memory of 2128	1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe	net.exe
PID 1396 wrote to memory of 2220	1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe	net.exe
PID 1396 wrote to memory of 2220	1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe	net.exe
PID 1396 wrote to memory of 2220	1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe	net.exe
PID 1396 wrote to memory of 2220	1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe	net.exe
PID 268 wrote to memory of 2228	268	lsdyXfy.exe	net.exe
PID 268 wrote to memory of 2228	268	lsdyXfy.exe	net.exe
PID 268 wrote to memory of 2228	268	lsdyXfy.exe	net.exe
PID 268 wrote to memory of 2228	268	lsdyXfy.exe	net.exe
PID 1396 wrote to memory of 2236	1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe	net.exe
PID 1396 wrote to memory of 2236	1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe	net.exe
PID 1396 wrote to memory of 2236	1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe	net.exe
PID 1396 wrote to memory of 2236	1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe	net.exe
PID 2128 wrote to memory of 2656	2128	net.exe	net1.exe
PID 2128 wrote to memory of 2656	2128	net.exe	net1.exe
PID 2128 wrote to memory of 2656	2128	net.exe	net1.exe
PID 2128 wrote to memory of 2656	2128	net.exe	net1.exe
PID 2136 wrote to memory of 2664	2136	net.exe	net1.exe
PID 2136 wrote to memory of 2664	2136	net.exe	net1.exe
PID 2136 wrote to memory of 2664	2136	net.exe	net1.exe
PID 2136 wrote to memory of 2664	2136	net.exe	net1.exe
PID 2144 wrote to memory of 2672	2144	net.exe	net1.exe
PID 2144 wrote to memory of 2672	2144	net.exe	net1.exe
PID 2144 wrote to memory of 2672	2144	net.exe	net1.exe
PID 2144 wrote to memory of 2672	2144	net.exe	net1.exe
PID 2228 wrote to memory of 2640	2228	net.exe	net1.exe
PID 2228 wrote to memory of 2640	2228	net.exe	net1.exe
PID 2228 wrote to memory of 2640	2228	net.exe	net1.exe
PID 2228 wrote to memory of 2640	2228	net.exe	net1.exe
PID 2236 wrote to memory of 2680	2236	net.exe	net1.exe
PID 2236 wrote to memory of 2680	2236	net.exe	net1.exe
PID 2236 wrote to memory of 2680	2236	net.exe	net1.exe
PID 2236 wrote to memory of 2680	2236	net.exe	net1.exe
PID 2220 wrote to memory of 2692	2220	net.exe	net1.exe
PID 2220 wrote to memory of 2692	2220	net.exe	net1.exe
PID 2220 wrote to memory of 2692	2220	net.exe	net1.exe
PID 2220 wrote to memory of 2692	2220	net.exe	net1.exe
PID 1396 wrote to memory of 36816	1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe	net.exe
PID 1396 wrote to memory of 36816	1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe	net.exe
PID 1396 wrote to memory of 36816	1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe	net.exe
PID 1396 wrote to memory of 36816	1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe	net.exe
PID 36816 wrote to memory of 35980	36816	net.exe	net1.exe
PID 36816 wrote to memory of 35980	36816	net.exe	net1.exe
PID 36816 wrote to memory of 35980	36816	net.exe	net1.exe
PID 36816 wrote to memory of 35980	36816	net.exe	net1.exe
PID 1396 wrote to memory of 36012	1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe	net.exe
PID 1396 wrote to memory of 36012	1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe	net.exe
PID 1396 wrote to memory of 36012	1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe	net.exe
PID 1396 wrote to memory of 36012	1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe	net.exe

C:\Users\Admin\AppData\Local\Temp\2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe
"C:\Users\Admin\AppData\Local\Temp\2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe"
1⤵
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1396

C:\Users\Admin\AppData\Local\Temp\lsdyXfy.exe
"C:\Users\Admin\AppData\Local\Temp\lsdyXfy.exe" 8 LAN
2⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:268

C:\Windows\SysWOW64\net.exe
"C:\Windows\System32\net.exe" stop "audioendpointbuilder" /y
3⤵
- Suspicious use of WriteProcessMemory
PID:2136

C:\Windows\SysWOW64\net1.exe
C:\Windows\system32\net1 stop "audioendpointbuilder" /y
4⤵
PID:2664

C:\Windows\SysWOW64\net.exe
"C:\Windows\System32\net.exe" stop "samss" /y
3⤵
- Suspicious use of WriteProcessMemory
PID:2228

C:\Windows\SysWOW64\net1.exe
C:\Windows\system32\net1 stop "samss" /y
4⤵
PID:2640

C:\Windows\SysWOW64\net.exe
"C:\Windows\System32\net.exe" stop "samss" /y
3⤵
PID:36296

C:\Windows\SysWOW64\net1.exe
C:\Windows\system32\net1 stop "samss" /y
4⤵
PID:36336

C:\Windows\SysWOW64\net.exe
"C:\Windows\System32\net.exe" stop "samss" /y
3⤵
PID:51076

C:\Windows\SysWOW64\net1.exe
C:\Windows\system32\net1 stop "samss" /y
4⤵
PID:51120

C:\Windows\SysWOW64\net.exe
"C:\Windows\System32\net.exe" stop "audioendpointbuilder" /y
2⤵
- Suspicious use of WriteProcessMemory
PID:2144

C:\Windows\SysWOW64\net1.exe
C:\Windows\system32\net1 stop "audioendpointbuilder" /y
3⤵
PID:2672

C:\Windows\SysWOW64\net.exe
"C:\Windows\System32\net.exe" stop "audioendpointbuilder" /y
2⤵
- Suspicious use of WriteProcessMemory
PID:2128

C:\Windows\SysWOW64\net1.exe
C:\Windows\system32\net1 stop "audioendpointbuilder" /y
3⤵
PID:2656

C:\Windows\SysWOW64\net.exe
"C:\Windows\System32\net.exe" stop "samss" /y
2⤵
- Suspicious use of WriteProcessMemory
PID:2220

C:\Windows\SysWOW64\net1.exe
C:\Windows\system32\net1 stop "samss" /y
3⤵
PID:2692

C:\Windows\SysWOW64\net.exe
"C:\Windows\System32\net.exe" stop "samss" /y
2⤵
- Suspicious use of WriteProcessMemory
PID:2236

C:\Windows\SysWOW64\net1.exe
C:\Windows\system32\net1 stop "samss" /y
3⤵
PID:2680

C:\Windows\SysWOW64\net.exe
"C:\Windows\System32\net.exe" stop "samss" /y
2⤵
- Suspicious use of WriteProcessMemory
PID:36816

C:\Windows\SysWOW64\net1.exe
C:\Windows\system32\net1 stop "samss" /y
3⤵
PID:35980

C:\Windows\SysWOW64\net.exe
"C:\Windows\System32\net.exe" stop "samss" /y
2⤵
PID:36012

C:\Windows\SysWOW64\net1.exe
C:\Windows\system32\net1 stop "samss" /y
3⤵
PID:36076

C:\Windows\SysWOW64\net.exe
"C:\Windows\System32\net.exe" stop "samss" /y
2⤵
PID:47552

C:\Windows\SysWOW64\net1.exe
C:\Windows\system32\net1 stop "samss" /y
3⤵
PID:47404

C:\Windows\SysWOW64\net.exe
"C:\Windows\System32\net.exe" stop "samss" /y
2⤵
PID:47516

C:\Windows\SysWOW64\net1.exe
C:\Windows\system32\net1 stop "samss" /y
3⤵
PID:47844

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\ProgramData\Microsoft\Crypto\RSA\MachineKeys\08e575673cce10c72090304839888e02_3bd845b8-ce6a-4337-9974-31490196462a
MD5
93a5aadeec082ffc1bca5aa27af70f52

SHA1
47a92aee3ea4d1c1954ed4da9f86dd79d9277d31

SHA256
a1a21799e98f97f271657ce656076f33dcb020d9370f1f2671d783cafd230294

SHA512
df388c8d83e779e006d6311b2046fcf9259ec33d379fc0e2c6a4b6b90418f587a12c5c23acd488413a02568ca2d3effe04608ec7c791925c7ed53dc71093ca45

Download Submit
C:\Users\Admin\AppData\Local\Temp\RyukReadMe.html
MD5
d6d77d9000b3decc7ee5b1c70137ce31

SHA1
ddaac70c0f89ca1dad8609896f46a1b406815276

SHA256
e70be40aecb791c2b2fa0b2475e94bbf2c3d70b015d41d7675b38a94a6e9eaae

SHA512
97c3525a0cc41f2d58b7fbe742e76fac365ea0530386cb9b2d891ac918760c64eac643f01823acdd7109d6d548aa40726253c46c242390e230da07685c5d23a9

Download Submit
C:\Users\Admin\AppData\Local\Temp\lsdyXfy.exe
MD5
cfb761465693bd4511f038d8e468e62e

SHA1
c8d64b3d2208a3cf40f4d9c182c9829beaa1eb86

SHA256
2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912

SHA512
2622751f9f5ab89287a1d88c9f027a7117549fcd0280f104a598c7953713d32e6ce5adfdd26abec709e1c848b8bc9f50e5226185721a22d2b3573d2d0264d36c

Download Submit
\Users\Admin\AppData\Local\Temp\lsdyXfy.exe
MD5
cfb761465693bd4511f038d8e468e62e

SHA1
c8d64b3d2208a3cf40f4d9c182c9829beaa1eb86

SHA256
2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912

SHA512
2622751f9f5ab89287a1d88c9f027a7117549fcd0280f104a598c7953713d32e6ce5adfdd26abec709e1c848b8bc9f50e5226185721a22d2b3573d2d0264d36c

Download Submit
\Users\Admin\AppData\Local\Temp\lsdyXfy.exe
MD5
cfb761465693bd4511f038d8e468e62e

SHA1
c8d64b3d2208a3cf40f4d9c182c9829beaa1eb86

SHA256
2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912

SHA512
2622751f9f5ab89287a1d88c9f027a7117549fcd0280f104a598c7953713d32e6ce5adfdd26abec709e1c848b8bc9f50e5226185721a22d2b3573d2d0264d36c

Download Submit
memory/268-62-0x000000000E140000-0x000000000EBFA000-memory.dmp

Filesize
10.7MB

Download
memory/268-63-0x000000000EE40000-0x000000000EF64000-memory.dmp

Filesize
1.1MB

Download
memory/1396-55-0x0000000075AC1000-0x0000000075AC3000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

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Downloads