nymaim | a16487ca2516af4730c00a9bdee91b0e2078e56047b79049daee2f94cdf18974

General

Target

file.exe
Size

1.4MB
MD5

0601eaf19fac87d4aac709d45e41c366
SHA1

1fc6d4c17900c54b9917fc05343273154b7f6667
SHA256

a16487ca2516af4730c00a9bdee91b0e2078e56047b79049daee2f94cdf18974
SHA512

29354229e78fe32eb51fd7c3b16f72d88fb40592ec748542fabd58756982007bbc5e5f63d578ecf6c18d2da92efd300df47fbfab73769edf2dab39e64adad99e
SSDEEP

24576:g20hhV+ol/UBAFil1slfMt4492r+qoUpiGTtsO5GRl4cYf+kATuCqtn/:g2QVRl/xKkfMB92rL6GTENkATuCE/

Score

10^/10

nymaim discovery trojan

Malware Config

Extracted

Family

nymaim

C2

45.139.105.171

85.31.46.167

Signatures

NyMaim
NyMaim is a malware with various capabilities written in C++ and first seen in 2013.
trojan nymaim

Executes dropped EXE 3 IoCs

Processes:

file.tmpNitFiles451.exeXrVwpmSMHke1i.exe

pid	Process
4332	file.tmp
4444	NitFiles451.exe
4948	XrVwpmSMHke1i.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

NitFiles451.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation	NitFiles451.exe

Loads dropped DLL 1 IoCs

Processes:

file.tmp

pid	Process
4332	file.tmp

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Drops file in Program Files directory 17 IoCs

Processes:

file.tmp

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Nit Files\unins000.dat	file.tmp
File created	C:\Program Files (x86)\Nit Files\is-EQ2P4.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\language\is-VJR7H.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\language\is-4UPAN.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\language\is-2LLN5.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\language\is-MD3E6.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\language\is-NFNJL.tmp	file.tmp
File opened for modification	C:\Program Files (x86)\Nit Files\NitFiles451.exe	file.tmp
File created	C:\Program Files (x86)\Nit Files\unins000.dat	file.tmp
File created	C:\Program Files (x86)\Nit Files\is-28A3M.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\language\is-EVQN8.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\language\is-KME56.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\language\is-QQIA6.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\is-68D33.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\language\is-24EVR.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\is-6K58S.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\is-S11K2.tmp	file.tmp

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

System Information Discovery
T1082

Kills process with taskkill 1 IoCs

evasion

Processes:

taskkill.exe

pid	Process
1848	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

NitFiles451.exe

pid	Process
4444	NitFiles451.exe
4444	NitFiles451.exe
4444	NitFiles451.exe
4444	NitFiles451.exe
4444	NitFiles451.exe
4444	NitFiles451.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

taskkill.exe

description	pid	Process
Token: SeDebugPrivilege	1848	taskkill.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

file.exefile.tmpNitFiles451.execmd.exe

description	pid	Process	procid_target
PID 1408 wrote to memory of 4332	1408	file.exe	78
PID 1408 wrote to memory of 4332	1408	file.exe	78
PID 1408 wrote to memory of 4332	1408	file.exe	78
PID 4332 wrote to memory of 4444	4332	file.tmp	79
PID 4332 wrote to memory of 4444	4332	file.tmp	79
PID 4332 wrote to memory of 4444	4332	file.tmp	79
PID 4444 wrote to memory of 4948	4444	NitFiles451.exe	80
PID 4444 wrote to memory of 4948	4444	NitFiles451.exe	80
PID 4444 wrote to memory of 4948	4444	NitFiles451.exe	80
PID 4444 wrote to memory of 4476	4444	NitFiles451.exe	89
PID 4444 wrote to memory of 4476	4444	NitFiles451.exe	89
PID 4444 wrote to memory of 4476	4444	NitFiles451.exe	89
PID 4476 wrote to memory of 1848	4476	cmd.exe	91
PID 4476 wrote to memory of 1848	4476	cmd.exe	91
PID 4476 wrote to memory of 1848	4476	cmd.exe	91

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1408
- C:\Users\Admin\AppData\Local\Temp\is-OGRJ2.tmp\file.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-OGRJ2.tmp\file.tmp" /SL5="$80028,1144504,233984,C:\Users\Admin\AppData\Local\Temp\file.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in Program Files directory
  - Suspicious use of WriteProcessMemory
  PID:4332
- - C:\Program Files (x86)\Nit Files\NitFiles451.exe
    "C:\Program Files (x86)\Nit Files\NitFiles451.exe"
    3⤵
    - Executes dropped EXE
    - Checks computer location settings
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:4444
  - - C:\Users\Admin\AppData\Roaming\{1ca2f389-1ab8-11ed-aebb-806e6f6e6963}\XrVwpmSMHke1i.exe
      4⤵
      Executes dropped EXE
      PID:4948
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "NitFiles451.exe" /f & erase "C:\Program Files (x86)\Nit Files\NitFiles451.exe" & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:4476
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "NitFiles451.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:1848

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Program Files (x86)\Nit Files\NitFiles451.exe

Filesize
1.9MB

MD5
bf6a5edfdcec350898debb5e89d9a5c9

SHA1
6c20044afefe72674d36f9af91d27770368e8f7a

SHA256
c41e0389f68feebef91fdfe8c47ffdf3cd993459d8a1b1ce635d96b683181814

SHA512
2e93c3553879f0c446fb2bd4b62cd7d42faefc4afa82ce420cbd897731408f248f64cb6c75aa1c8247f7755efe038dad115851bff2ee03d5f502edeca3a46ffc

Download Submit
C:\Program Files (x86)\Nit Files\NitFiles451.exe

Filesize
1.9MB

MD5
bf6a5edfdcec350898debb5e89d9a5c9

SHA1
6c20044afefe72674d36f9af91d27770368e8f7a

SHA256
c41e0389f68feebef91fdfe8c47ffdf3cd993459d8a1b1ce635d96b683181814

SHA512
2e93c3553879f0c446fb2bd4b62cd7d42faefc4afa82ce420cbd897731408f248f64cb6c75aa1c8247f7755efe038dad115851bff2ee03d5f502edeca3a46ffc

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-H8HHE.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-OGRJ2.tmp\file.tmp

Filesize
849KB

MD5
56c525b0e7751035562a3bd35096b17d

SHA1
befb8a8e73e296e95412b319bc20f76fb382d525

SHA256
6fbb6401d3de1f971f182f9292e817fbeee537725cd5a5974b2bd7bd90a26559

SHA512
75e793a12229ac68cc5ed92d97c1db55dbeb1712cb5377fc2323363e4ffd026f2e68c7852fa0eb6837c8ba7f5449a70160c3cadb49c062c4dc53cdbccdf6d354

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-OGRJ2.tmp\file.tmp

Filesize
849KB

MD5
56c525b0e7751035562a3bd35096b17d

SHA1
befb8a8e73e296e95412b319bc20f76fb382d525

SHA256
6fbb6401d3de1f971f182f9292e817fbeee537725cd5a5974b2bd7bd90a26559

SHA512
75e793a12229ac68cc5ed92d97c1db55dbeb1712cb5377fc2323363e4ffd026f2e68c7852fa0eb6837c8ba7f5449a70160c3cadb49c062c4dc53cdbccdf6d354

Download Submit
C:\Users\Admin\AppData\Roaming\{1ca2f389-1ab8-11ed-aebb-806e6f6e6963}\XrVwpmSMHke1i.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
C:\Users\Admin\AppData\Roaming\{1ca2f389-1ab8-11ed-aebb-806e6f6e6963}\XrVwpmSMHke1i.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
memory/1408-157-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/1408-137-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/1408-132-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/1408-152-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/1848-155-0x0000000000000000-mapping.dmp

Download
memory/4332-134-0x0000000000000000-mapping.dmp

Download
memory/4444-143-0x0000000000400000-0x00000000013E9000-memory.dmp

Filesize
15.9MB

Download
memory/4444-148-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download
memory/4444-144-0x0000000000400000-0x00000000013E9000-memory.dmp

Filesize
15.9MB

Download
memory/4444-153-0x0000000000400000-0x00000000013E9000-memory.dmp

Filesize
15.9MB

Download
memory/4444-156-0x0000000000400000-0x00000000013E9000-memory.dmp

Filesize
15.9MB

Download
memory/4444-142-0x0000000000400000-0x00000000013E9000-memory.dmp

Filesize
15.9MB

Download
memory/4444-139-0x0000000000000000-mapping.dmp

Download
memory/4476-154-0x0000000000000000-mapping.dmp

Download
memory/4948-145-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads