nymaim | 0de56e567b2d39e8a6a22cfdabadf9396975ce34acfbbb90e55052dd30dc18b9

Analysis

max time kernel
142s
max time network
145s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
05/10/2022, 04:37

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General

Target
file.exe
Size 359KB
Sample221005-e8s79sdda5
SHA256 0de56e567b2d39e8a6a22cfdabadf9396975ce34acfbbb90e55052dd30dc18b9
MD5 bda263ea4f1681added182faaf815513
SHA1 d610b8399e7107ea17a9bca2ce2b4191a65b66f4
SHA512 10563bdf8c2126f720f3c0843c58d03d780f8d123b6654f678fbf31f5cace183e65de2c4220ca27edd78f52fd1119c3e37758e00089b71192746cec1e1b40960
SSDEEP 6144:sPu8KxLfsGgsRxtkRQStRTO9WOnqwuzbgwuE0wwVf:sPtKxAGgsL2QSXqntunn
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

nymaim trojan

Malware Config

Extracted

Family

nymaim

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
1272	Cleaner.exe

Deletes itself 1 IoCs

pid	Process
1552	cmd.exe

Loads dropped DLL 1 IoCs

pid	Process
576	cmd.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs

Web Service
T1102

AutoIT Executable 3 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral1/files/0x000a000000012353-59.dat	autoit_exe
behavioral1/files/0x000a000000012353-61.dat	autoit_exe
behavioral1/files/0x000a000000012353-63.dat	autoit_exe

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
552	1272	WerFault.exe	31

Kills process with taskkill 1 IoCs

evasion

pid	Process
1564	taskkill.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1512	file.exe
1512	file.exe
1512	file.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1272	Cleaner.exe
Token: SeDebugPrivilege	1564	taskkill.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 1512 wrote to memory of 576	1512	file.exe	29
PID 1512 wrote to memory of 576	1512	file.exe	29
PID 1512 wrote to memory of 576	1512	file.exe	29
PID 1512 wrote to memory of 576	1512	file.exe	29
PID 576 wrote to memory of 1272	576	cmd.exe	31
PID 576 wrote to memory of 1272	576	cmd.exe	31
PID 576 wrote to memory of 1272	576	cmd.exe	31
PID 576 wrote to memory of 1272	576	cmd.exe	31
PID 1272 wrote to memory of 552	1272	Cleaner.exe	33
PID 1272 wrote to memory of 552	1272	Cleaner.exe	33
PID 1272 wrote to memory of 552	1272	Cleaner.exe	33
PID 1512 wrote to memory of 1552	1512	file.exe	34
PID 1512 wrote to memory of 1552	1512	file.exe	34
PID 1512 wrote to memory of 1552	1512	file.exe	34
PID 1512 wrote to memory of 1552	1512	file.exe	34
PID 1552 wrote to memory of 1564	1552	cmd.exe	36
PID 1552 wrote to memory of 1564	1552	cmd.exe	36
PID 1552 wrote to memory of 1564	1552	cmd.exe	36
PID 1552 wrote to memory of 1564	1552	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:1512
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c start /I "" "C:\Users\Admin\AppData\Local\Temp\e4J4tpdDd\Cleaner.exe"
  2⤵
  - Loads dropped DLL
  - Suspicious use of WriteProcessMemory
  PID:576
- - C:\Users\Admin\AppData\Local\Temp\e4J4tpdDd\Cleaner.exe
    "C:\Users\Admin\AppData\Local\Temp\e4J4tpdDd\Cleaner.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:1272
  - - C:\Windows\system32\WerFault.exe
      C:\Windows\system32\WerFault.exe -u -p 1272 -s 1160
      4⤵
      Program crash
      PID:552
- 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:1552
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "file.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:1564

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Web Service

T1102

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

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Downloads

Bunifu_UI_v1.5.3.dll

Path C:\Users\Admin\AppData\Local\Temp\e4J4tpdDd\Bunifu_UI_v1.5.3.dll
Size 236KB
SHA256 f1b3e0f2750a9103e46a6a4a34f1cf9d17779725f98042cc2475ec66484801cf
MD5 2ecb51ab00c5f340380ecf849291dbcf
SHA1 1a4dffbce2a4ce65495ed79eab42a4da3b660931
SHA512 e241a48eafcaf99187035f0870d24d74ae97fe84aaadd2591cceea9f64b8223d77cfb17a038a58eadd3b822c5201a6f7494f26eea6f77d95f77f6c668d088e6b
SSDEEP 6144:SIQpxILDXGGMO7Ice9C5kQw2hWHcHTykhb:SIQpxILDXGGlET9n/cHG
MD5 SHA1 SHA512 SSDEEP

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Cleaner.exe

Path C:\Users\Admin\AppData\Local\Temp\e4J4tpdDd\Cleaner.exe
Size 3.8MB
SHA256 c394b068aa87264419f60838a8812b750e67cf93f2494c62b9078c3708072568
MD5 04514bd4962f7d60679434e0ebe49184
SHA1 1493a5447eb8156a7d7aecff60ee8bfba2209526
SHA512 a71c7ed5dfdda22f095dc99b16e8342a42e3361be16e0241dbf8983dd0d5f6e90eb0299aac1815cf78ad3a9f15fa89b42b720b7f818ee5f502300f102ef4c93e
SSDEEP 49152:+/PD/DL/D9CuZrr2h60qPPB+lJJkF9IC966eB+lJJkF9IC966eB+lJJkF9IC966h:+3D///UUrP43m8C/3m8C/3m8C5
MD5 SHA1 SHA512 SSDEEP

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Cleaner.exe

Path C:\Users\Admin\AppData\Local\Temp\e4J4tpdDd\Cleaner.exe
Size 3.8MB
SHA256 c394b068aa87264419f60838a8812b750e67cf93f2494c62b9078c3708072568
MD5 04514bd4962f7d60679434e0ebe49184
SHA1 1493a5447eb8156a7d7aecff60ee8bfba2209526
SHA512 a71c7ed5dfdda22f095dc99b16e8342a42e3361be16e0241dbf8983dd0d5f6e90eb0299aac1815cf78ad3a9f15fa89b42b720b7f818ee5f502300f102ef4c93e
SSDEEP 49152:+/PD/DL/D9CuZrr2h60qPPB+lJJkF9IC966eB+lJJkF9IC966eB+lJJkF9IC966h:+3D///UUrP43m8C/3m8C/3m8C5
MD5 SHA1 SHA512 SSDEEP

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Cleaner.exe

Path \Users\Admin\AppData\Local\Temp\e4J4tpdDd\Cleaner.exe
Size 3.8MB
SHA256 c394b068aa87264419f60838a8812b750e67cf93f2494c62b9078c3708072568
MD5 04514bd4962f7d60679434e0ebe49184
SHA1 1493a5447eb8156a7d7aecff60ee8bfba2209526
SHA512 a71c7ed5dfdda22f095dc99b16e8342a42e3361be16e0241dbf8983dd0d5f6e90eb0299aac1815cf78ad3a9f15fa89b42b720b7f818ee5f502300f102ef4c93e
SSDEEP 49152:+/PD/DL/D9CuZrr2h60qPPB+lJJkF9IC966eB+lJJkF9IC966eB+lJJkF9IC966h:+3D///UUrP43m8C/3m8C/3m8C5
MD5 SHA1 SHA512 SSDEEP

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memory/1272-69-0x00000000002C0000-0x0000000000302000-memory.dmp

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memory/1272-67-0x000007FEFC181000-0x000007FEFC183000-memory.dmp

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memory/1272-65-0x0000000000F50000-0x00000000010A6000-memory.dmp

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memory/1512-64-0x00000000005F0000-0x000000000062F000-memory.dmp

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memory/1512-62-0x00000000008BC000-0x00000000008E2000-memory.dmp

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memory/1512-66-0x0000000000400000-0x000000000045F000-memory.dmp

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memory/1512-57-0x0000000000400000-0x000000000045F000-memory.dmp

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memory/1512-54-0x00000000008BC000-0x00000000008E2000-memory.dmp

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memory/1512-56-0x00000000005F0000-0x000000000062F000-memory.dmp

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memory/1512-55-0x00000000756A1000-0x00000000756A3000-memory.dmp

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memory/1512-71-0x0000000010000000-0x000000001001B000-memory.dmp

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memory/1512-76-0x00000000008BC000-0x00000000008E2000-memory.dmp

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memory/1512-77-0x0000000000400000-0x000000000045F000-memory.dmp

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