nymaim | 00f95eebb3a5050e61a5944b1b735bc94ca082bb09a377a1784f7bee39f774fa

Analysis

max time kernel
55s
max time network
57s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
09/01/2023, 23:31

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General

Target
file.exe
Size 1.0MB
Sample230109-3hpddsbf41
SHA256 00f95eebb3a5050e61a5944b1b735bc94ca082bb09a377a1784f7bee39f774fa
MD5 0805be38f611ef19f9394c6c51cb5ad6
SHA1 19e110cf5226ccc5fa2ebba439f52cfdb46241ce
SHA512 4b331df2edd92387be399b652306038b2c9b059c6f094091c09197b9d75767a8a5cd68776c507e0961bd6b6240c42cfd99b8650000b710d695be52cc899d893c
SSDEEP 24576:R20400HRXyd2DxPDWKhAPO4h1O1rgfC5E5CSkl5l/Hlc:R2S0HFyd85nWPO4hs1kfC5Tl50
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

nymaim discovery trojan

Malware Config

Extracted

Family

nymaim

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

pid	Process
1676	file.tmp
1744	JitFiles135.exe
2032	7rBlja5T.exe

Loads dropped DLL 6 IoCs

pid	Process
1788	file.exe
1676	file.tmp
1676	file.tmp
1676	file.tmp
1676	file.tmp
1744	JitFiles135.exe

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

description	ioc	Process
File created	C:\Program Files (x86)\Split Files\language\is-J0PTC.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\language\is-L4TKI.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\language\is-AEUO6.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\language\is-7K5KG.tmp	file.tmp
File opened for modification	C:\Program Files (x86)\Split Files\JitFiles135.exe	file.tmp
File created	C:\Program Files (x86)\Split Files\is-73QBI.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\is-N6MF0.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\language\is-CS2OJ.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\language\is-A146U.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\is-N3HDC.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\is-0A10S.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\is-A9R2J.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\unins000.dat	file.tmp
File created	C:\Program Files (x86)\Split Files\language\is-V35NI.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\language\is-H8DLM.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\language\is-0QN1S.tmp	file.tmp
File opened for modification	C:\Program Files (x86)\Split Files\unins000.dat	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

pid	Process
1180	taskkill.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1744	JitFiles135.exe
1744	JitFiles135.exe
1744	JitFiles135.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1180	taskkill.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1788 wrote to memory of 1676	1788	file.exe	28
PID 1788 wrote to memory of 1676	1788	file.exe	28
PID 1788 wrote to memory of 1676	1788	file.exe	28
PID 1788 wrote to memory of 1676	1788	file.exe	28
PID 1788 wrote to memory of 1676	1788	file.exe	28
PID 1788 wrote to memory of 1676	1788	file.exe	28
PID 1788 wrote to memory of 1676	1788	file.exe	28
PID 1676 wrote to memory of 1744	1676	file.tmp	29
PID 1676 wrote to memory of 1744	1676	file.tmp	29
PID 1676 wrote to memory of 1744	1676	file.tmp	29
PID 1676 wrote to memory of 1744	1676	file.tmp	29
PID 1744 wrote to memory of 2032	1744	JitFiles135.exe	30
PID 1744 wrote to memory of 2032	1744	JitFiles135.exe	30
PID 1744 wrote to memory of 2032	1744	JitFiles135.exe	30
PID 1744 wrote to memory of 2032	1744	JitFiles135.exe	30
PID 1744 wrote to memory of 1796	1744	JitFiles135.exe	33
PID 1744 wrote to memory of 1796	1744	JitFiles135.exe	33
PID 1744 wrote to memory of 1796	1744	JitFiles135.exe	33
PID 1744 wrote to memory of 1796	1744	JitFiles135.exe	33
PID 1796 wrote to memory of 1180	1796	cmd.exe	35
PID 1796 wrote to memory of 1180	1796	cmd.exe	35
PID 1796 wrote to memory of 1180	1796	cmd.exe	35
PID 1796 wrote to memory of 1180	1796	cmd.exe	35

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1788
- C:\Users\Admin\AppData\Local\Temp\is-VTKQ6.tmp\file.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-VTKQ6.tmp\file.tmp" /SL5="$60122,849229,51712,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:1676
- - C:\Program Files (x86)\Split Files\JitFiles135.exe
    "C:\Program Files (x86)\Split Files\JitFiles135.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:1744
  - - C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\7rBlja5T.exe
      4⤵
      Executes dropped EXE
      PID:2032
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "JitFiles135.exe" /f & erase "C:\Program Files (x86)\Split Files\JitFiles135.exe" & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:1796
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "JitFiles135.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:1180

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

JitFiles135.exe

Path C:\Program Files (x86)\Split Files\JitFiles135.exe
Size 1.6MB
SHA256 60dd0c61aed01e6b9cdbe23dff73444ef9a7a019a95d6ae34e8a3d169d02d769
MD5 70d46c4110e5c01efd7061c3b61c9608
SHA1 d1161f691314c9e6e42b78939e8eda99ddb90dac
SHA512 70868d42c1cf33604c9cb067f13d10a20752ced1610e3a0798b77dea7b6af83919d6546ffe2aa2baaf19369b03e8e8781022f28b0883d6fe8a907c8be8359c9f
SSDEEP 24576:x+baEHHgouHe59TCd8d2bp2VqEuq4NCkg71uf85p9JoR:x+bGi9udvp2VqEOc9LoR
MD5 SHA1 SHA512 SSDEEP

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JitFiles135.exe

Path C:\Program Files (x86)\Split Files\JitFiles135.exe
Size 1.6MB
SHA256 60dd0c61aed01e6b9cdbe23dff73444ef9a7a019a95d6ae34e8a3d169d02d769
MD5 70d46c4110e5c01efd7061c3b61c9608
SHA1 d1161f691314c9e6e42b78939e8eda99ddb90dac
SHA512 70868d42c1cf33604c9cb067f13d10a20752ced1610e3a0798b77dea7b6af83919d6546ffe2aa2baaf19369b03e8e8781022f28b0883d6fe8a907c8be8359c9f
SSDEEP 24576:x+baEHHgouHe59TCd8d2bp2VqEuq4NCkg71uf85p9JoR:x+bGi9udvp2VqEOc9LoR
MD5 SHA1 SHA512 SSDEEP

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file.tmp

Path C:\Users\Admin\AppData\Local\Temp\is-VTKQ6.tmp\file.tmp
Size 692KB
SHA256 30893d74dace626f98a12862d02b582ecec4671c338f8638f637e53a700e5dd1
MD5 7958276140c2d23a53ae8a1f2aa20771
SHA1 fd6b462e6d69efff1d57575b084212c8e57367aa
SHA512 772c61d78659ce76c4c7ea36bf092958b212414a874434e06272c709d221e74855a388273bcc677e94dff61cd593aba7b74368f716784e68a40516d28da9477b
SSDEEP 12288:cuA/ac4cUrPN37qzHxA6bA7xfmL+weNERfJbkrNZcRgJmuxffDkNmXEx9BF:cN/ac4cUrPN37qzHxA6odmL+tNE70tmF
MD5 SHA1 SHA512 SSDEEP

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file.tmp

Path C:\Users\Admin\AppData\Local\Temp\is-VTKQ6.tmp\file.tmp
Size 692KB
SHA256 30893d74dace626f98a12862d02b582ecec4671c338f8638f637e53a700e5dd1
MD5 7958276140c2d23a53ae8a1f2aa20771
SHA1 fd6b462e6d69efff1d57575b084212c8e57367aa
SHA512 772c61d78659ce76c4c7ea36bf092958b212414a874434e06272c709d221e74855a388273bcc677e94dff61cd593aba7b74368f716784e68a40516d28da9477b
SSDEEP 12288:cuA/ac4cUrPN37qzHxA6bA7xfmL+weNERfJbkrNZcRgJmuxffDkNmXEx9BF:cN/ac4cUrPN37qzHxA6odmL+tNE70tmF
MD5 SHA1 SHA512 SSDEEP

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7rBlja5T.exe

Path C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\7rBlja5T.exe
Size 72KB
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
SSDEEP 1536:bvUpDLxyxA14o3/M238r6+XfHAgbqmE8MpKdwuasZLUM7DsWlXcdyZgfmi:WDLZKa/MtXfHAgbqmEtxsfmyZgfmi
MD5 SHA1 SHA512 SSDEEP

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JitFiles135.exe

Path \Program Files (x86)\Split Files\JitFiles135.exe
Size 1.6MB
SHA256 60dd0c61aed01e6b9cdbe23dff73444ef9a7a019a95d6ae34e8a3d169d02d769
MD5 70d46c4110e5c01efd7061c3b61c9608
SHA1 d1161f691314c9e6e42b78939e8eda99ddb90dac
SHA512 70868d42c1cf33604c9cb067f13d10a20752ced1610e3a0798b77dea7b6af83919d6546ffe2aa2baaf19369b03e8e8781022f28b0883d6fe8a907c8be8359c9f
SSDEEP 24576:x+baEHHgouHe59TCd8d2bp2VqEuq4NCkg71uf85p9JoR:x+bGi9udvp2VqEOc9LoR
MD5 SHA1 SHA512 SSDEEP

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_iscrypt.dll

Path \Users\Admin\AppData\Local\Temp\is-P2T0H.tmp\_isetup\_iscrypt.dll
Size 2KB
SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
MD5 a69559718ab506675e907fe49deb71e9
SHA1 bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA512 e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
MD5 SHA1 SHA512

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_shfoldr.dll

Path \Users\Admin\AppData\Local\Temp\is-P2T0H.tmp\_isetup\_shfoldr.dll
Size 22KB
SHA256 9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87
MD5 92dc6ef532fbb4a5c3201469a5b5eb63
SHA1 3e89ff837147c16b4e41c30d6c796374e0b8e62c
SHA512 9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3
SSDEEP 384:+Vm08QoKkiWZ76UJuP71W55iWHHoSHigH2euwsHTGHVb+VHHmnH+aHjHqLHxmoq1:2m08QotiCjJuPGw4
MD5 SHA1 SHA512 SSDEEP

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_shfoldr.dll

Path \Users\Admin\AppData\Local\Temp\is-P2T0H.tmp\_isetup\_shfoldr.dll
Size 22KB
SHA256 9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87
MD5 92dc6ef532fbb4a5c3201469a5b5eb63
SHA1 3e89ff837147c16b4e41c30d6c796374e0b8e62c
SHA512 9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3
SSDEEP 384:+Vm08QoKkiWZ76UJuP71W55iWHHoSHigH2euwsHTGHVb+VHHmnH+aHjHqLHxmoq1:2m08QotiCjJuPGw4
MD5 SHA1 SHA512 SSDEEP

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file.tmp

Path \Users\Admin\AppData\Local\Temp\is-VTKQ6.tmp\file.tmp
Size 692KB
SHA256 30893d74dace626f98a12862d02b582ecec4671c338f8638f637e53a700e5dd1
MD5 7958276140c2d23a53ae8a1f2aa20771
SHA1 fd6b462e6d69efff1d57575b084212c8e57367aa
SHA512 772c61d78659ce76c4c7ea36bf092958b212414a874434e06272c709d221e74855a388273bcc677e94dff61cd593aba7b74368f716784e68a40516d28da9477b
SSDEEP 12288:cuA/ac4cUrPN37qzHxA6bA7xfmL+weNERfJbkrNZcRgJmuxffDkNmXEx9BF:cN/ac4cUrPN37qzHxA6odmL+tNE70tmF
MD5 SHA1 SHA512 SSDEEP

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7rBlja5T.exe

Path \Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\7rBlja5T.exe
Size 72KB
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
SSDEEP 1536:bvUpDLxyxA14o3/M238r6+XfHAgbqmE8MpKdwuasZLUM7DsWlXcdyZgfmi:WDLZKa/MtXfHAgbqmEtxsfmyZgfmi
MD5 SHA1 SHA512 SSDEEP

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memory/1676-81-0x00000000035B0000-0x000000000454B000-memory.dmp

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memory/1676-70-0x00000000035B0000-0x000000000454B000-memory.dmp

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memory/1744-73-0x0000000000400000-0x000000000139B000-memory.dmp

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memory/1744-72-0x0000000000400000-0x000000000139B000-memory.dmp

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memory/1744-77-0x0000000010000000-0x000000001001B000-memory.dmp

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memory/1744-82-0x0000000000400000-0x000000000139B000-memory.dmp

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memory/1744-71-0x0000000000400000-0x000000000139B000-memory.dmp

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memory/1744-85-0x0000000000400000-0x000000000139B000-memory.dmp

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memory/1788-69-0x0000000000400000-0x0000000000414000-memory.dmp

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memory/1788-54-0x0000000076321000-0x0000000076323000-memory.dmp

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memory/1788-86-0x0000000000400000-0x0000000000414000-memory.dmp

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memory/1788-55-0x0000000000400000-0x0000000000414000-memory.dmp

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