nworm | 3f3a298e7b430343d12d9039e9e83ae46c4bc952ea9b329959be1aa07205787a

General

Target

3f3a298e7b430343d12d9039e9e83ae46c4bc952ea9b329959be1aa07205787a.exe
Size

19KB
MD5

c722ffe89ecb69db142ecb15bc71c572
SHA1

febf301c31f726d00682afda2b33f2776d7b34c2
SHA256

3f3a298e7b430343d12d9039e9e83ae46c4bc952ea9b329959be1aa07205787a
SHA512

4b396ed48645db4d983bdf8e55755af5bf4613e14a8aeb1881774264c2fb62508ea4fe67fb5d98783107649365c13b1acd32e2aa44d0272b36c2e80f533ffa67

Score

10^/10

nworm downloader worm

Malware Config

Extracted

Family

nworm

Version

v0.3.8

C2

ofi.dyn.ydns.io:1080

redlan.mywire.org:1080

Mutex

b0456e7e

Signatures

NWorm
A TrickBot module used to propagate to vulnerable domain controllers.
worm downloader nworm
Executes dropped EXE 1 IoCs

Processes:

NetUserDat.exe

pid process

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

System Information Discovery
T1082
Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exe

pid process

304 schtasks.exe
Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

1224 timeout.exe

pid	process
428	NetUserDat.exe

pid	process
304	schtasks.exe

pid	process
1224	timeout.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

3f3a298e7b430343d12d9039e9e83ae46c4bc952ea9b329959be1aa07205787a.exeNetUserDat.exe

pid	process
308	3f3a298e7b430343d12d9039e9e83ae46c4bc952ea9b329959be1aa07205787a.exe
308	3f3a298e7b430343d12d9039e9e83ae46c4bc952ea9b329959be1aa07205787a.exe
308	3f3a298e7b430343d12d9039e9e83ae46c4bc952ea9b329959be1aa07205787a.exe
428	NetUserDat.exe
428	NetUserDat.exe
428	NetUserDat.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

3f3a298e7b430343d12d9039e9e83ae46c4bc952ea9b329959be1aa07205787a.exeNetUserDat.exe

description	pid	process
Token: SeDebugPrivilege	308	3f3a298e7b430343d12d9039e9e83ae46c4bc952ea9b329959be1aa07205787a.exe
Token: SeDebugPrivilege	428	NetUserDat.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

3f3a298e7b430343d12d9039e9e83ae46c4bc952ea9b329959be1aa07205787a.execmd.exe

description	pid	process	target process
PID 308 wrote to memory of 304	308	3f3a298e7b430343d12d9039e9e83ae46c4bc952ea9b329959be1aa07205787a.exe	schtasks.exe
PID 308 wrote to memory of 304	308	3f3a298e7b430343d12d9039e9e83ae46c4bc952ea9b329959be1aa07205787a.exe	schtasks.exe
PID 308 wrote to memory of 304	308	3f3a298e7b430343d12d9039e9e83ae46c4bc952ea9b329959be1aa07205787a.exe	schtasks.exe
PID 308 wrote to memory of 824	308	3f3a298e7b430343d12d9039e9e83ae46c4bc952ea9b329959be1aa07205787a.exe	cmd.exe
PID 308 wrote to memory of 824	308	3f3a298e7b430343d12d9039e9e83ae46c4bc952ea9b329959be1aa07205787a.exe	cmd.exe
PID 308 wrote to memory of 824	308	3f3a298e7b430343d12d9039e9e83ae46c4bc952ea9b329959be1aa07205787a.exe	cmd.exe
PID 824 wrote to memory of 1224	824	cmd.exe	timeout.exe
PID 824 wrote to memory of 1224	824	cmd.exe	timeout.exe
PID 824 wrote to memory of 1224	824	cmd.exe	timeout.exe
PID 824 wrote to memory of 428	824	cmd.exe	NetUserDat.exe
PID 824 wrote to memory of 428	824	cmd.exe	NetUserDat.exe
PID 824 wrote to memory of 428	824	cmd.exe	NetUserDat.exe

C:\Users\Admin\AppData\Local\Temp\3f3a298e7b430343d12d9039e9e83ae46c4bc952ea9b329959be1aa07205787a.exe
"C:\Users\Admin\AppData\Local\Temp\3f3a298e7b430343d12d9039e9e83ae46c4bc952ea9b329959be1aa07205787a.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:308

C:\Windows\System32\schtasks.exe
"C:\Windows\System32\schtasks.exe" /create /f /sc ONLOGON /RL HIGHEST /tn "'NetUserDat.exe"' /tr "'C:\Users\Admin\AppData\Roaming\NetUserDat.exe"'
2⤵
- Creates scheduled task(s)
PID:304

C:\Windows\system32\cmd.exe
cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp4B52.tmp.bat""
2⤵
- Suspicious use of WriteProcessMemory
PID:824

C:\Windows\system32\timeout.exe
timeout 3
3⤵
- Delays execution with timeout.exe
PID:1224

C:\Users\Admin\AppData\Roaming\NetUserDat.exe
"C:\Users\Admin\AppData\Roaming\NetUserDat.exe"
3⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:428

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp4B52.tmp.bat
MD5
abf17c3a9458f1adea182b49cd17b617

SHA1
7cf4eaba7aa99d6ccb0d0af6bc0f0e9ed30282f0

SHA256
80237041c6c5eaf8e7a42b46d5df52d3b8c9f4a2c1dcd4a91dfe5d5d78dfbbe9

SHA512
7a450e8698cb3bd75e385ccf7fe2a5e6f322fdedf7616521bae800efecab457444fe39197195a91dc8ea6307803c20b0345ee46caa93b637b3afff822ab9d837

Download Submit
C:\Users\Admin\AppData\Roaming\NetUserDat.exe
MD5
2b49fa530456d173471f0c1de64a3997

SHA1
7c3e94ac692b321d4ea6dcba2907cb8107053ad9

SHA256
b399cf366d2c98df3cae6db0ad460bb86fdc5a817673f7ead6a791e3c085ab78

SHA512
11c93fec39724cff74031e7ffa7f86a2ad1cf8b5eb2e3e88e8b617bfa4767d07b7293952f81c6d8f4d1287ac649ca1f64b392bf1da1b3eb705c6381a58fafdf4

Download Submit
C:\Users\Admin\AppData\Roaming\NetUserDat.exe
MD5
2b49fa530456d173471f0c1de64a3997

SHA1
7c3e94ac692b321d4ea6dcba2907cb8107053ad9

SHA256
b399cf366d2c98df3cae6db0ad460bb86fdc5a817673f7ead6a791e3c085ab78

SHA512
11c93fec39724cff74031e7ffa7f86a2ad1cf8b5eb2e3e88e8b617bfa4767d07b7293952f81c6d8f4d1287ac649ca1f64b392bf1da1b3eb705c6381a58fafdf4

Download Submit
memory/308-54-0x00000000011E0000-0x00000000011EC000-memory.dmp

Filesize
48KB

Download
memory/308-55-0x000000001B0F0000-0x000000001B0F2000-memory.dmp

Filesize
8KB

Download
memory/428-59-0x0000000000340000-0x000000000034C000-memory.dmp

Filesize
48KB

Download
memory/428-60-0x000000001B0C0000-0x000000001B0C2000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads