nymaim | deebc9dcb690b19e27a5a849c0d866cca730c9603e6d85750bbef6d3dfdb420b

Analysis

max time kernel
60s
max time network
62s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
13/12/2022, 12:18

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General

Target
file.exe
Size 2.4MB
Sample221213-pgln8aef29
SHA256 deebc9dcb690b19e27a5a849c0d866cca730c9603e6d85750bbef6d3dfdb420b
MD5 67a4c83ac82fb855ad12e3f71416b659
SHA1 ec03b826879aaf67d0ed497a10b5c42adc9227e0
SHA512 654adc7802c86fad42b0c0a478228ef951cccc9f8f6f383cf6c043c06577a814a057f8788d1a234cb6f06d0f769d27db1b17f6de748862824ad284b9e8b62b61
SSDEEP 49152:hLMFENGpvqPkuDDaPGQGfioA9RzYNQ9XE0NicesFJHng5:hLMeNGpvqbDDautszYcUSiVsC
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
1200	is-RVH53.tmp
936	nxFolders.exe
1728	lHBTGD.exe

Loads dropped DLL 10 IoCs

pid	Process
832	file.exe
1200	is-RVH53.tmp
1200	is-RVH53.tmp
1200	is-RVH53.tmp
1200	is-RVH53.tmp
936	nxFolders.exe
936	nxFolders.exe
936	nxFolders.exe
1728	lHBTGD.exe
1728	lHBTGD.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 9 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\PrintFolders\unins000.dat	is-RVH53.tmp
File created	C:\Program Files (x86)\PrintFolders\is-C3U72.tmp	is-RVH53.tmp
File created	C:\Program Files (x86)\PrintFolders\is-NGLKF.tmp	is-RVH53.tmp
File created	C:\Program Files (x86)\PrintFolders\is-0TH4P.tmp	is-RVH53.tmp
File created	C:\Program Files (x86)\PrintFolders\is-9L2OI.tmp	is-RVH53.tmp
File opened for modification	C:\Program Files (x86)\PrintFolders\unins000.dat	is-RVH53.tmp
File created	C:\Program Files (x86)\PrintFolders\is-05UR3.tmp	is-RVH53.tmp
File created	C:\Program Files (x86)\PrintFolders\is-3AMT7.tmp	is-RVH53.tmp
File opened for modification	C:\Program Files (x86)\PrintFolders\nxFolders.exe	is-RVH53.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
272	taskkill.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
936	nxFolders.exe
936	nxFolders.exe
936	nxFolders.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeRestorePrivilege	1200	is-RVH53.tmp
Token: SeBackupPrivilege	1200	is-RVH53.tmp
Token: SeDebugPrivilege	272	taskkill.exe

Suspicious use of WriteProcessMemory 35 IoCs

description	pid	Process	procid_target
PID 832 wrote to memory of 1200	832	file.exe	27
PID 832 wrote to memory of 1200	832	file.exe	27
PID 832 wrote to memory of 1200	832	file.exe	27
PID 832 wrote to memory of 1200	832	file.exe	27
PID 832 wrote to memory of 1200	832	file.exe	27
PID 832 wrote to memory of 1200	832	file.exe	27
PID 832 wrote to memory of 1200	832	file.exe	27
PID 1200 wrote to memory of 936	1200	is-RVH53.tmp	28
PID 1200 wrote to memory of 936	1200	is-RVH53.tmp	28
PID 1200 wrote to memory of 936	1200	is-RVH53.tmp	28
PID 1200 wrote to memory of 936	1200	is-RVH53.tmp	28
PID 1200 wrote to memory of 936	1200	is-RVH53.tmp	28
PID 1200 wrote to memory of 936	1200	is-RVH53.tmp	28
PID 1200 wrote to memory of 936	1200	is-RVH53.tmp	28
PID 936 wrote to memory of 1728	936	nxFolders.exe	29
PID 936 wrote to memory of 1728	936	nxFolders.exe	29
PID 936 wrote to memory of 1728	936	nxFolders.exe	29
PID 936 wrote to memory of 1728	936	nxFolders.exe	29
PID 936 wrote to memory of 1728	936	nxFolders.exe	29
PID 936 wrote to memory of 1728	936	nxFolders.exe	29
PID 936 wrote to memory of 1728	936	nxFolders.exe	29
PID 936 wrote to memory of 1904	936	nxFolders.exe	32
PID 936 wrote to memory of 1904	936	nxFolders.exe	32
PID 936 wrote to memory of 1904	936	nxFolders.exe	32
PID 936 wrote to memory of 1904	936	nxFolders.exe	32
PID 936 wrote to memory of 1904	936	nxFolders.exe	32
PID 936 wrote to memory of 1904	936	nxFolders.exe	32
PID 936 wrote to memory of 1904	936	nxFolders.exe	32
PID 1904 wrote to memory of 272	1904	cmd.exe	34
PID 1904 wrote to memory of 272	1904	cmd.exe	34
PID 1904 wrote to memory of 272	1904	cmd.exe	34
PID 1904 wrote to memory of 272	1904	cmd.exe	34
PID 1904 wrote to memory of 272	1904	cmd.exe	34
PID 1904 wrote to memory of 272	1904	cmd.exe	34
PID 1904 wrote to memory of 272	1904	cmd.exe	34

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:832
- C:\Users\Admin\AppData\Local\Temp\is-5IEMB.tmp\is-RVH53.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-5IEMB.tmp\is-RVH53.tmp" /SL4 $60124 "C:\Users\Admin\AppData\Local\Temp\file.exe" 2237901 170496
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in Program Files directory
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1200
- - C:\Program Files (x86)\PrintFolders\nxFolders.exe
    "C:\Program Files (x86)\PrintFolders\nxFolders.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:936
  - - C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\lHBTGD.exe
      4⤵
      Executes dropped EXE
      Loads dropped DLL
      PID:1728
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "nxFolders.exe" /f & erase "C:\Program Files (x86)\PrintFolders\nxFolders.exe" & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:1904
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "nxFolders.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:272

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

nxFolders.exe

Path C:\Program Files (x86)\PrintFolders\nxFolders.exe
Size 3.5MB
SHA256 abd10eeecbd5df5c238afa52c5edd1d5524e8affed402fd31044e6125017dd52
MD5 c66f16d2ba20a1702cb17c7bd54f8ef2
SHA1 5e03e7f6af1f729f7bb1845b62205a7961925bc9
SHA512 bedf29483905b4963f8a9a8716a25e9930a873c0124cee525d667d4a430e10c2557b4c19a8638e28348a6aff1027536825b092e1f5a9ef1a54e227fb035ca1f9
SSDEEP 98304:Mgw5XmwvAfAMBSV9TgVpPuwUJaRKN/EkUWEDP1w:rfruyZa
MD5 SHA1 SHA512 SSDEEP

Submit Download

nxFolders.exe

Path C:\Program Files (x86)\PrintFolders\nxFolders.exe
Size 3.5MB
SHA256 abd10eeecbd5df5c238afa52c5edd1d5524e8affed402fd31044e6125017dd52
MD5 c66f16d2ba20a1702cb17c7bd54f8ef2
SHA1 5e03e7f6af1f729f7bb1845b62205a7961925bc9
SHA512 bedf29483905b4963f8a9a8716a25e9930a873c0124cee525d667d4a430e10c2557b4c19a8638e28348a6aff1027536825b092e1f5a9ef1a54e227fb035ca1f9
SSDEEP 98304:Mgw5XmwvAfAMBSV9TgVpPuwUJaRKN/EkUWEDP1w:rfruyZa
MD5 SHA1 SHA512 SSDEEP

Submit Download

is-RVH53.tmp

Path C:\Users\Admin\AppData\Local\Temp\is-5IEMB.tmp\is-RVH53.tmp
Size 760KB
SHA256 f92bcd82630801e6015811bd7c19b8392b9cb80c476b40a50f5c38b6a79634d7
MD5 8586221a52b8c9c25d579b5bd6e5a2ad
SHA1 8b8167f74e4a2e6885bf54ee904e9195cf51a6c1
SHA512 6225c56f72a6b5bf4a1f0623030a473344c4b6452a3e05aa87145aefe03286ee3096c62148196f4f016bba5848138a1933287eda5b59bcd6657c3bf1e40ce8d2
SSDEEP 12288:Nh5UooqWolrP837JzHvA6izJgnnyFNmayiAZrvSmLN9MHHxOw:z5NoqWolrP837JzHvA6yknyWFxvzMHHV
MD5 SHA1 SHA512 SSDEEP

Submit Download

is-RVH53.tmp

Path C:\Users\Admin\AppData\Local\Temp\is-5IEMB.tmp\is-RVH53.tmp
Size 760KB
SHA256 f92bcd82630801e6015811bd7c19b8392b9cb80c476b40a50f5c38b6a79634d7
MD5 8586221a52b8c9c25d579b5bd6e5a2ad
SHA1 8b8167f74e4a2e6885bf54ee904e9195cf51a6c1
SHA512 6225c56f72a6b5bf4a1f0623030a473344c4b6452a3e05aa87145aefe03286ee3096c62148196f4f016bba5848138a1933287eda5b59bcd6657c3bf1e40ce8d2
SSDEEP 12288:Nh5UooqWolrP837JzHvA6izJgnnyFNmayiAZrvSmLN9MHHxOw:z5NoqWolrP837JzHvA6yknyWFxvzMHHV
MD5 SHA1 SHA512 SSDEEP

Submit Download

lHBTGD.exe

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

Submit Download

lHBTGD.exe

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

Submit Download

nxFolders.exe

Path \Program Files (x86)\PrintFolders\nxFolders.exe
Size 3.5MB
SHA256 abd10eeecbd5df5c238afa52c5edd1d5524e8affed402fd31044e6125017dd52
MD5 c66f16d2ba20a1702cb17c7bd54f8ef2
SHA1 5e03e7f6af1f729f7bb1845b62205a7961925bc9
SHA512 bedf29483905b4963f8a9a8716a25e9930a873c0124cee525d667d4a430e10c2557b4c19a8638e28348a6aff1027536825b092e1f5a9ef1a54e227fb035ca1f9
SSDEEP 98304:Mgw5XmwvAfAMBSV9TgVpPuwUJaRKN/EkUWEDP1w:rfruyZa
MD5 SHA1 SHA512 SSDEEP

Submit Download

nxFolders.exe

Path \Program Files (x86)\PrintFolders\nxFolders.exe
Size 3.5MB
SHA256 abd10eeecbd5df5c238afa52c5edd1d5524e8affed402fd31044e6125017dd52
MD5 c66f16d2ba20a1702cb17c7bd54f8ef2
SHA1 5e03e7f6af1f729f7bb1845b62205a7961925bc9
SHA512 bedf29483905b4963f8a9a8716a25e9930a873c0124cee525d667d4a430e10c2557b4c19a8638e28348a6aff1027536825b092e1f5a9ef1a54e227fb035ca1f9
SSDEEP 98304:Mgw5XmwvAfAMBSV9TgVpPuwUJaRKN/EkUWEDP1w:rfruyZa
MD5 SHA1 SHA512 SSDEEP

Submit Download

nxFolders.exe

Path \Program Files (x86)\PrintFolders\nxFolders.exe
Size 3.5MB
SHA256 abd10eeecbd5df5c238afa52c5edd1d5524e8affed402fd31044e6125017dd52
MD5 c66f16d2ba20a1702cb17c7bd54f8ef2
SHA1 5e03e7f6af1f729f7bb1845b62205a7961925bc9
SHA512 bedf29483905b4963f8a9a8716a25e9930a873c0124cee525d667d4a430e10c2557b4c19a8638e28348a6aff1027536825b092e1f5a9ef1a54e227fb035ca1f9
SSDEEP 98304:Mgw5XmwvAfAMBSV9TgVpPuwUJaRKN/EkUWEDP1w:rfruyZa
MD5 SHA1 SHA512 SSDEEP

Submit Download

is-RVH53.tmp

Path \Users\Admin\AppData\Local\Temp\is-5IEMB.tmp\is-RVH53.tmp
Size 760KB
SHA256 f92bcd82630801e6015811bd7c19b8392b9cb80c476b40a50f5c38b6a79634d7
MD5 8586221a52b8c9c25d579b5bd6e5a2ad
SHA1 8b8167f74e4a2e6885bf54ee904e9195cf51a6c1
SHA512 6225c56f72a6b5bf4a1f0623030a473344c4b6452a3e05aa87145aefe03286ee3096c62148196f4f016bba5848138a1933287eda5b59bcd6657c3bf1e40ce8d2
SSDEEP 12288:Nh5UooqWolrP837JzHvA6izJgnnyFNmayiAZrvSmLN9MHHxOw:z5NoqWolrP837JzHvA6yknyWFxvzMHHV
MD5 SHA1 SHA512 SSDEEP

Submit Download

_iscrypt.dll

Path \Users\Admin\AppData\Local\Temp\is-EU38N.tmp\_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-EU38N.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-EU38N.tmp\_isetup\_shfoldr.dll
Size 22KB
SHA256 9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87
MD5 92dc6ef532fbb4a5c3201469a5b5eb63
SHA1 3e89ff837147c16b4e41c30d6c796374e0b8e62c
SHA512 9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3
SSDEEP 384:+Vm08QoKkiWZ76UJuP71W55iWHHoSHigH2euwsHTGHVb+VHHmnH+aHjHqLHxmoq1:2m08QotiCjJuPGw4
MD5 SHA1 SHA512 SSDEEP

Submit Download

lHBTGD.exe

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

Submit Download

lHBTGD.exe

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

Submit Download

lHBTGD.exe

Path \Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\lHBTGD.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/832-100-0x0000000000400000-0x0000000000430000-memory.dmp

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memory/832-68-0x0000000000400000-0x0000000000430000-memory.dmp

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memory/832-54-0x0000000075091000-0x0000000075093000-memory.dmp

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memory/832-55-0x0000000000400000-0x0000000000430000-memory.dmp

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memory/936-94-0x0000000000400000-0x000000000158A000-memory.dmp

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memory/936-98-0x0000000000400000-0x000000000158A000-memory.dmp

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memory/936-77-0x0000000000400000-0x000000000158A000-memory.dmp

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memory/936-76-0x0000000001CA0000-0x0000000002E2A000-memory.dmp

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memory/936-75-0x0000000001CA0000-0x0000000002E2A000-memory.dmp

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memory/936-73-0x0000000000400000-0x000000000158A000-memory.dmp

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memory/936-86-0x0000000000400000-0x000000000158A000-memory.dmp

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memory/936-87-0x0000000010000000-0x000000001001B000-memory.dmp

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memory/936-78-0x0000000000400000-0x000000000158A000-memory.dmp

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memory/936-92-0x0000000001CA0000-0x0000000002E2A000-memory.dmp

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memory/936-93-0x0000000001CA0000-0x0000000002E2A000-memory.dmp

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memory/1200-91-0x0000000003110000-0x000000000429A000-memory.dmp

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memory/1200-70-0x0000000003110000-0x000000000429A000-memory.dmp

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