nymaim | 18c30e414f29b448aae4f64101cb56f7c674b6f810e4d0b73d0885ac8dc7cf0e

General

Target

file.exe
Size

263KB
MD5

c7e2f4a3759e2a647cdf123a3764086a
SHA1

82fbac0345a73d5d590900ecf57b52be35e053fe
SHA256

18c30e414f29b448aae4f64101cb56f7c674b6f810e4d0b73d0885ac8dc7cf0e
SHA512

d4ff669f8642153a23af415c3e1f4aeea2b9b5a80ef1fe3ad6d248ebc41306b056be80af87cf844fad26948f4ce6da98d9ffa05f9fe028c4211509d046928f8f
SSDEEP

6144:HzndBq01FyPULhKrED9a3S9nSflP09Dvhc:TndBvFyPU8rwai9nOPAT

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
2016	Cleaner.exe

Deletes itself 1 IoCs

pid	Process
560	cmd.exe

Loads dropped DLL 1 IoCs

pid	Process
1780	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
1092	2016	WerFault.exe	31

Kills process with taskkill 1 IoCs

evasion

pid	Process
980	taskkill.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1972	file.exe
1972	file.exe
1972	file.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2016	Cleaner.exe
Token: SeDebugPrivilege	980	taskkill.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 1972 wrote to memory of 1780	1972	file.exe	29
PID 1972 wrote to memory of 1780	1972	file.exe	29
PID 1972 wrote to memory of 1780	1972	file.exe	29
PID 1972 wrote to memory of 1780	1972	file.exe	29
PID 1780 wrote to memory of 2016	1780	cmd.exe	31
PID 1780 wrote to memory of 2016	1780	cmd.exe	31
PID 1780 wrote to memory of 2016	1780	cmd.exe	31
PID 1780 wrote to memory of 2016	1780	cmd.exe	31
PID 2016 wrote to memory of 1092	2016	Cleaner.exe	33
PID 2016 wrote to memory of 1092	2016	Cleaner.exe	33
PID 2016 wrote to memory of 1092	2016	Cleaner.exe	33
PID 1972 wrote to memory of 560	1972	file.exe	34
PID 1972 wrote to memory of 560	1972	file.exe	34
PID 1972 wrote to memory of 560	1972	file.exe	34
PID 1972 wrote to memory of 560	1972	file.exe	34
PID 560 wrote to memory of 980	560	cmd.exe	36
PID 560 wrote to memory of 980	560	cmd.exe	36
PID 560 wrote to memory of 980	560	cmd.exe	36
PID 560 wrote to memory of 980	560	cmd.exe	36

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1972
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c start /I "" "C:\Users\Admin\AppData\Local\Temp\QH6rGr0obKTl6X\Cleaner.exe"
  2⤵
  - Loads dropped DLL
  - Suspicious use of WriteProcessMemory
  PID:1780
- - C:\Users\Admin\AppData\Local\Temp\QH6rGr0obKTl6X\Cleaner.exe
    "C:\Users\Admin\AppData\Local\Temp\QH6rGr0obKTl6X\Cleaner.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:2016
  - - C:\Windows\system32\WerFault.exe
      C:\Windows\system32\WerFault.exe -u -p 2016 -s 1156
      4⤵
      Program crash
      PID:1092
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "file.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\file.exe" & exit
  2⤵
  - Deletes itself
  - Suspicious use of WriteProcessMemory
  PID:560
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "file.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:980

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\QH6rGr0obKTl6X\Bunifu_UI_v1.5.3.dll

Filesize
236KB

MD5
2ecb51ab00c5f340380ecf849291dbcf

SHA1
1a4dffbce2a4ce65495ed79eab42a4da3b660931

SHA256
f1b3e0f2750a9103e46a6a4a34f1cf9d17779725f98042cc2475ec66484801cf

SHA512
e241a48eafcaf99187035f0870d24d74ae97fe84aaadd2591cceea9f64b8223d77cfb17a038a58eadd3b822c5201a6f7494f26eea6f77d95f77f6c668d088e6b

Download Submit
C:\Users\Admin\AppData\Local\Temp\QH6rGr0obKTl6X\Cleaner.exe

Filesize
3.8MB

MD5
23c1e8f48ec06960bbd9969c1f404192

SHA1
b9384151eb3f2dbd095fa273c248722e1cc74ea3

SHA256
301d9c55653f6cd8211aafdaf130092cb7ef8ea2e54db2db97153c1c8abf272c

SHA512
f572e3a0ad58b3a1ed22db00b05a3909f7f53f70b84ab736e2dd6ddc54d8781fcffe4a9b33b0dd2836d438a1982b944426fe4ed01bd866bd77e20046220f2b5b

Download Submit
C:\Users\Admin\AppData\Local\Temp\QH6rGr0obKTl6X\Cleaner.exe

Filesize
3.8MB

MD5
23c1e8f48ec06960bbd9969c1f404192

SHA1
b9384151eb3f2dbd095fa273c248722e1cc74ea3

SHA256
301d9c55653f6cd8211aafdaf130092cb7ef8ea2e54db2db97153c1c8abf272c

SHA512
f572e3a0ad58b3a1ed22db00b05a3909f7f53f70b84ab736e2dd6ddc54d8781fcffe4a9b33b0dd2836d438a1982b944426fe4ed01bd866bd77e20046220f2b5b

Download Submit
\Users\Admin\AppData\Local\Temp\QH6rGr0obKTl6X\Cleaner.exe

Filesize
3.8MB

MD5
23c1e8f48ec06960bbd9969c1f404192

SHA1
b9384151eb3f2dbd095fa273c248722e1cc74ea3

SHA256
301d9c55653f6cd8211aafdaf130092cb7ef8ea2e54db2db97153c1c8abf272c

SHA512
f572e3a0ad58b3a1ed22db00b05a3909f7f53f70b84ab736e2dd6ddc54d8781fcffe4a9b33b0dd2836d438a1982b944426fe4ed01bd866bd77e20046220f2b5b

Download Submit
memory/1972-70-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download
memory/1972-57-0x0000000000400000-0x000000000059B000-memory.dmp

Filesize
1.6MB

Download
memory/1972-67-0x000000000074B000-0x0000000000771000-memory.dmp

Filesize
152KB

Download
memory/1972-68-0x0000000000400000-0x000000000059B000-memory.dmp

Filesize
1.6MB

Download
memory/1972-54-0x0000000075CF1000-0x0000000075CF3000-memory.dmp

Filesize
8KB

Download
memory/1972-55-0x000000000074B000-0x0000000000771000-memory.dmp

Filesize
152KB

Download
memory/1972-75-0x0000000000400000-0x000000000059B000-memory.dmp

Filesize
1.6MB

Download
memory/1972-56-0x0000000000220000-0x000000000025F000-memory.dmp

Filesize
252KB

Download
memory/2016-63-0x0000000001310000-0x0000000001490000-memory.dmp

Filesize
1.5MB

Download
memory/2016-64-0x000007FEFC511000-0x000007FEFC513000-memory.dmp

Filesize
8KB

Download
memory/2016-66-0x00000000003B0000-0x00000000003F2000-memory.dmp

Filesize
264KB

Download

Analysis

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