nymaim | 9d10e07c176205bf5f93eb73dff3c55380729cd1f9c96f529021b9ea1a0a176f

General

Target

file.exe
Size

415KB
MD5

db1bbc9f436acca9319999f8a11000ba
SHA1

618a457d6a6b7224b67e257ad3b5892475074344
SHA256

9d10e07c176205bf5f93eb73dff3c55380729cd1f9c96f529021b9ea1a0a176f
SHA512

ca06cec40edf23a24e96b6de7a270072d9a2e28e1f1183484d93c1ddf8c45cd35a96fe5b3e0ff76a986dce84d77302a5d7ca9fba87b0b084c6dce7468b1c6450
SSDEEP

6144:IWIQGkkeHDxtOoPSyIFuYybRZtcVSDGWUFjkn0GknigabwVfs:IWIQ+eHDxtzPSyIFuYybREVSBUZXXiB

Score

10^/10

nymaim trojan

Malware Config

Extracted

Family

nymaim

C2

208.67.104.97

85.31.46.167

Signatures

NyMaim
NyMaim is a malware with various capabilities written in C++ and first seen in 2013.
trojan nymaim
Downloads MZ/PE file

Executes dropped EXE 1 IoCs

pid	Process
1160	Cleaner.exe

Loads dropped DLL 1 IoCs

pid	Process
580	cmd.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs

Web Service
T1102
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1400	1160	WerFault.exe	31

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1668	file.exe
1668	file.exe
1668	file.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1668	file.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1160	Cleaner.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 1668 wrote to memory of 580	1668	file.exe	29
PID 1668 wrote to memory of 580	1668	file.exe	29
PID 1668 wrote to memory of 580	1668	file.exe	29
PID 1668 wrote to memory of 580	1668	file.exe	29
PID 580 wrote to memory of 1160	580	cmd.exe	31
PID 580 wrote to memory of 1160	580	cmd.exe	31
PID 580 wrote to memory of 1160	580	cmd.exe	31
PID 580 wrote to memory of 1160	580	cmd.exe	31
PID 1160 wrote to memory of 1400	1160	Cleaner.exe	33
PID 1160 wrote to memory of 1400	1160	Cleaner.exe	33
PID 1160 wrote to memory of 1400	1160	Cleaner.exe	33

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:1668
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c start /I "" "C:\Users\Admin\AppData\Local\Temp\l6vUqqKJuoRNB5oM4SOC75\Cleaner.exe"
  2⤵
  - Loads dropped DLL
  - Suspicious use of WriteProcessMemory
  PID:580
- - C:\Users\Admin\AppData\Local\Temp\l6vUqqKJuoRNB5oM4SOC75\Cleaner.exe
    "C:\Users\Admin\AppData\Local\Temp\l6vUqqKJuoRNB5oM4SOC75\Cleaner.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:1160
  - - C:\Windows\system32\WerFault.exe
      C:\Windows\system32\WerFault.exe -u -p 1160 -s 1068
      4⤵
      Program crash
      PID:1400

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Web Service

1

T1102

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Web Service

1

T1102

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\l6vUqqKJuoRNB5oM4SOC75\Bunifu_UI_v1.5.3.dll

Filesize
236KB

MD5
2ecb51ab00c5f340380ecf849291dbcf

SHA1
1a4dffbce2a4ce65495ed79eab42a4da3b660931

SHA256
f1b3e0f2750a9103e46a6a4a34f1cf9d17779725f98042cc2475ec66484801cf

SHA512
e241a48eafcaf99187035f0870d24d74ae97fe84aaadd2591cceea9f64b8223d77cfb17a038a58eadd3b822c5201a6f7494f26eea6f77d95f77f6c668d088e6b

Download Submit
C:\Users\Admin\AppData\Local\Temp\l6vUqqKJuoRNB5oM4SOC75\Cleaner.exe

Filesize
4.2MB

MD5
e89589df13ac2783f322449f63547468

SHA1
bd938f596e09e2ed04c3bc0f0ac68de71e04bcf6

SHA256
663a353b45ed8f3acd4abc429f519635c1cf1294e3b9af98ffe6b1d4937c0e8f

SHA512
9e0126975b32d022b6fe89d4681981e57ef1a3c6375ee2df131ce3527a3ad91c795d75302b78c8fc59651e9e20cebfd177b3278a87f45f8174f9e4ec09fc9cc6

Download Submit
C:\Users\Admin\AppData\Local\Temp\l6vUqqKJuoRNB5oM4SOC75\Cleaner.exe

Filesize
4.2MB

MD5
e89589df13ac2783f322449f63547468

SHA1
bd938f596e09e2ed04c3bc0f0ac68de71e04bcf6

SHA256
663a353b45ed8f3acd4abc429f519635c1cf1294e3b9af98ffe6b1d4937c0e8f

SHA512
9e0126975b32d022b6fe89d4681981e57ef1a3c6375ee2df131ce3527a3ad91c795d75302b78c8fc59651e9e20cebfd177b3278a87f45f8174f9e4ec09fc9cc6

Download Submit
\Users\Admin\AppData\Local\Temp\l6vUqqKJuoRNB5oM4SOC75\Cleaner.exe

Filesize
4.2MB

MD5
e89589df13ac2783f322449f63547468

SHA1
bd938f596e09e2ed04c3bc0f0ac68de71e04bcf6

SHA256
663a353b45ed8f3acd4abc429f519635c1cf1294e3b9af98ffe6b1d4937c0e8f

SHA512
9e0126975b32d022b6fe89d4681981e57ef1a3c6375ee2df131ce3527a3ad91c795d75302b78c8fc59651e9e20cebfd177b3278a87f45f8174f9e4ec09fc9cc6

Download Submit
memory/1160-65-0x000007FEFB821000-0x000007FEFB823000-memory.dmp

Filesize
8KB

Download
memory/1160-64-0x0000000000D70000-0x0000000000EF2000-memory.dmp

Filesize
1.5MB

Download
memory/1160-67-0x00000000009E0000-0x0000000000A22000-memory.dmp

Filesize
264KB

Download
memory/1668-58-0x0000000000400000-0x000000000046C000-memory.dmp

Filesize
432KB

Download
memory/1668-56-0x00000000003C0000-0x00000000003FF000-memory.dmp

Filesize
252KB

Download
memory/1668-57-0x0000000000400000-0x000000000046C000-memory.dmp

Filesize
432KB

Download
memory/1668-54-0x0000000075071000-0x0000000075073000-memory.dmp

Filesize
8KB

Download
memory/1668-55-0x000000000026E000-0x0000000000294000-memory.dmp

Filesize
152KB

Download
memory/1668-69-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download

Analysis

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