nymaim | be89356d7bf1213503c8e32b28a7e6758e2485a1c16bacf18fe80b33cac99d2c

Analysis

max time kernel
58s
max time network
63s
platform
windows7_x64
resource
win7-20220901-en
resource tags

arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
submitted
26/11/2022, 01:31

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General

Target
file.exe
Size 1.3MB
Sample221126-bxdfwscc96
SHA256 be89356d7bf1213503c8e32b28a7e6758e2485a1c16bacf18fe80b33cac99d2c
MD5 026ee03fa1d76f0a6d521ece0f9c9d43
SHA1 ffc7f75c1e146b8a76f36b8d6746cd7821a2f0c5
SHA512 decd448632b2da989e6676f0a298ae9fb74f12b783cb73d3262048e1f45991aa0992d9b7630f7ee8f0691efd0c2e134af0bf0455943e60ea647c11fe0a04685e
SSDEEP 24576:Vize8gC3i8D8GI2xPrCO+gGLtkVMUs1huHva4emleYCgZIY7eCLxYi0:+e8gWFVrCJbENTtleCNeVi0
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
1288	is-IG4QE.tmp
1904	PrintFolders.exe
1612	iTl41.exe

Loads dropped DLL 10 IoCs

pid	Process
1388	file.exe
1288	is-IG4QE.tmp
1288	is-IG4QE.tmp
1288	is-IG4QE.tmp
1288	is-IG4QE.tmp
1904	PrintFolders.exe
1904	PrintFolders.exe
1904	PrintFolders.exe
1612	iTl41.exe
1612	iTl41.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\is-JN4A8.tmp	is-IG4QE.tmp
File created	C:\Program Files (x86)\PrintFolders\is-P6R3J.tmp	is-IG4QE.tmp
File opened for modification	C:\Program Files (x86)\PrintFolders\unins000.dat	is-IG4QE.tmp
File created	C:\Program Files (x86)\PrintFolders\is-16VUC.tmp	is-IG4QE.tmp
File opened for modification	C:\Program Files (x86)\PrintFolders\PrintFolders.exe	is-IG4QE.tmp
File created	C:\Program Files (x86)\PrintFolders\unins000.dat	is-IG4QE.tmp
File created	C:\Program Files (x86)\PrintFolders\is-O223V.tmp	is-IG4QE.tmp
File created	C:\Program Files (x86)\PrintFolders\is-DR5FR.tmp	is-IG4QE.tmp
File created	C:\Program Files (x86)\PrintFolders\is-8O63C.tmp	is-IG4QE.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
1808	taskkill.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1904	PrintFolders.exe
1904	PrintFolders.exe
1904	PrintFolders.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1808	taskkill.exe
Token: SeRestorePrivilege	1288	is-IG4QE.tmp
Token: SeBackupPrivilege	1288	is-IG4QE.tmp

Suspicious use of WriteProcessMemory 35 IoCs

description	pid	Process	procid_target
PID 1388 wrote to memory of 1288	1388	file.exe	27
PID 1388 wrote to memory of 1288	1388	file.exe	27
PID 1388 wrote to memory of 1288	1388	file.exe	27
PID 1388 wrote to memory of 1288	1388	file.exe	27
PID 1388 wrote to memory of 1288	1388	file.exe	27
PID 1388 wrote to memory of 1288	1388	file.exe	27
PID 1388 wrote to memory of 1288	1388	file.exe	27
PID 1288 wrote to memory of 1904	1288	is-IG4QE.tmp	28
PID 1288 wrote to memory of 1904	1288	is-IG4QE.tmp	28
PID 1288 wrote to memory of 1904	1288	is-IG4QE.tmp	28
PID 1288 wrote to memory of 1904	1288	is-IG4QE.tmp	28
PID 1288 wrote to memory of 1904	1288	is-IG4QE.tmp	28
PID 1288 wrote to memory of 1904	1288	is-IG4QE.tmp	28
PID 1288 wrote to memory of 1904	1288	is-IG4QE.tmp	28
PID 1904 wrote to memory of 1612	1904	PrintFolders.exe	29
PID 1904 wrote to memory of 1612	1904	PrintFolders.exe	29
PID 1904 wrote to memory of 1612	1904	PrintFolders.exe	29
PID 1904 wrote to memory of 1612	1904	PrintFolders.exe	29
PID 1904 wrote to memory of 1612	1904	PrintFolders.exe	29
PID 1904 wrote to memory of 1612	1904	PrintFolders.exe	29
PID 1904 wrote to memory of 1612	1904	PrintFolders.exe	29
PID 1904 wrote to memory of 860	1904	PrintFolders.exe	32
PID 1904 wrote to memory of 860	1904	PrintFolders.exe	32
PID 1904 wrote to memory of 860	1904	PrintFolders.exe	32
PID 1904 wrote to memory of 860	1904	PrintFolders.exe	32
PID 1904 wrote to memory of 860	1904	PrintFolders.exe	32
PID 1904 wrote to memory of 860	1904	PrintFolders.exe	32
PID 1904 wrote to memory of 860	1904	PrintFolders.exe	32
PID 860 wrote to memory of 1808	860	cmd.exe	34
PID 860 wrote to memory of 1808	860	cmd.exe	34
PID 860 wrote to memory of 1808	860	cmd.exe	34
PID 860 wrote to memory of 1808	860	cmd.exe	34
PID 860 wrote to memory of 1808	860	cmd.exe	34
PID 860 wrote to memory of 1808	860	cmd.exe	34
PID 860 wrote to memory of 1808	860	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:1388
- C:\Users\Admin\AppData\Local\Temp\is-BAUQ8.tmp\is-IG4QE.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-BAUQ8.tmp\is-IG4QE.tmp" /SL4 $A011C "C:\Users\Admin\AppData\Local\Temp\file.exe" 1131104 51712
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in Program Files directory
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1288
- - C:\Program Files (x86)\PrintFolders\PrintFolders.exe
    "C:\Program Files (x86)\PrintFolders\PrintFolders.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:1904
  - - C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\iTl41.exe
      4⤵
      Executes dropped EXE
      Loads dropped DLL
      PID:1612
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "PrintFolders.exe" /f & erase "C:\Program Files (x86)\PrintFolders\PrintFolders.exe" & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:860
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "PrintFolders.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:1808

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

PrintFolders.exe

Path C:\Program Files (x86)\PrintFolders\PrintFolders.exe
Size 1.5MB
SHA256 47e0312099a537536e8743d3940ce4d45767ef4ef2b8e8738a578669cdd45c92
MD5 48e4743044e25b90c1996c38925e195d
SHA1 6df587e1448ead208c0797f171f8501f4d40c6b4
SHA512 30680360109cd2b07b57172f349e263b095420b4e8f9336cc124f93951dff38bb2e76cabfc20750105d69f3a428ff3141b1c01c17888df6968942fbe9cd61fc3
SSDEEP 24576:qS28DzfhdASRqEpZOuUHon1ST7aeSuOoCxOSDHrvmXhN/A:qGPZ7qcUHon1SHouYIS7SA
MD5 SHA1 SHA512 SSDEEP

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PrintFolders.exe

Path C:\Program Files (x86)\PrintFolders\PrintFolders.exe
Size 1.5MB
SHA256 47e0312099a537536e8743d3940ce4d45767ef4ef2b8e8738a578669cdd45c92
MD5 48e4743044e25b90c1996c38925e195d
SHA1 6df587e1448ead208c0797f171f8501f4d40c6b4
SHA512 30680360109cd2b07b57172f349e263b095420b4e8f9336cc124f93951dff38bb2e76cabfc20750105d69f3a428ff3141b1c01c17888df6968942fbe9cd61fc3
SSDEEP 24576:qS28DzfhdASRqEpZOuUHon1ST7aeSuOoCxOSDHrvmXhN/A:qGPZ7qcUHon1SHouYIS7SA
MD5 SHA1 SHA512 SSDEEP

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is-IG4QE.tmp

Path C:\Users\Admin\AppData\Local\Temp\is-BAUQ8.tmp\is-IG4QE.tmp
Size 643KB
SHA256 1441464feeef365573af18802c464769b7d3107624fde24604f57e386f97f1a7
MD5 85b94e72c3f2d2b5464e2aaf3c9e242a
SHA1 ce7ccae5f50a990d059d59292d4a332979e162ba
SHA512 c0c27189989db482be9bda5b6b8b1441bdc5e9b0f3a414ccab4c4be516e7f99e25717845361a5b196114502faaaf21bec7aca91b497acd2e2396f49c31850880
SSDEEP 12288:Oh5UooqWolrP837JzHvA6izJgnnyFNmayiAZrvJxO0:05NoqWolrP837JzHvA6yknyWFxvJxO0
MD5 SHA1 SHA512 SSDEEP

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is-IG4QE.tmp

Path C:\Users\Admin\AppData\Local\Temp\is-BAUQ8.tmp\is-IG4QE.tmp
Size 643KB
SHA256 1441464feeef365573af18802c464769b7d3107624fde24604f57e386f97f1a7
MD5 85b94e72c3f2d2b5464e2aaf3c9e242a
SHA1 ce7ccae5f50a990d059d59292d4a332979e162ba
SHA512 c0c27189989db482be9bda5b6b8b1441bdc5e9b0f3a414ccab4c4be516e7f99e25717845361a5b196114502faaaf21bec7aca91b497acd2e2396f49c31850880
SSDEEP 12288:Oh5UooqWolrP837JzHvA6izJgnnyFNmayiAZrvJxO0:05NoqWolrP837JzHvA6yknyWFxvJxO0
MD5 SHA1 SHA512 SSDEEP

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iTl41.exe

Path C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\iTl41.exe
Size 72KB
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
SSDEEP 1536:bvUpDLxyxA14o3/M238r6+XfHAgbqmE8MpKdwuasZLUM7DsWlXcdyZgfmi:WDLZKa/MtXfHAgbqmEtxsfmyZgfmi
MD5 SHA1 SHA512 SSDEEP

Submit Download

iTl41.exe

Path C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\iTl41.exe
Size 72KB
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
SSDEEP 1536:bvUpDLxyxA14o3/M238r6+XfHAgbqmE8MpKdwuasZLUM7DsWlXcdyZgfmi:WDLZKa/MtXfHAgbqmEtxsfmyZgfmi
MD5 SHA1 SHA512 SSDEEP

Submit Download

PrintFolders.exe

Path \Program Files (x86)\PrintFolders\PrintFolders.exe
Size 1.5MB
SHA256 47e0312099a537536e8743d3940ce4d45767ef4ef2b8e8738a578669cdd45c92
MD5 48e4743044e25b90c1996c38925e195d
SHA1 6df587e1448ead208c0797f171f8501f4d40c6b4
SHA512 30680360109cd2b07b57172f349e263b095420b4e8f9336cc124f93951dff38bb2e76cabfc20750105d69f3a428ff3141b1c01c17888df6968942fbe9cd61fc3
SSDEEP 24576:qS28DzfhdASRqEpZOuUHon1ST7aeSuOoCxOSDHrvmXhN/A:qGPZ7qcUHon1SHouYIS7SA
MD5 SHA1 SHA512 SSDEEP

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PrintFolders.exe

Path \Program Files (x86)\PrintFolders\PrintFolders.exe
Size 1.5MB
SHA256 47e0312099a537536e8743d3940ce4d45767ef4ef2b8e8738a578669cdd45c92
MD5 48e4743044e25b90c1996c38925e195d
SHA1 6df587e1448ead208c0797f171f8501f4d40c6b4
SHA512 30680360109cd2b07b57172f349e263b095420b4e8f9336cc124f93951dff38bb2e76cabfc20750105d69f3a428ff3141b1c01c17888df6968942fbe9cd61fc3
SSDEEP 24576:qS28DzfhdASRqEpZOuUHon1ST7aeSuOoCxOSDHrvmXhN/A:qGPZ7qcUHon1SHouYIS7SA
MD5 SHA1 SHA512 SSDEEP

Submit Download

PrintFolders.exe

Path \Program Files (x86)\PrintFolders\PrintFolders.exe
Size 1.5MB
SHA256 47e0312099a537536e8743d3940ce4d45767ef4ef2b8e8738a578669cdd45c92
MD5 48e4743044e25b90c1996c38925e195d
SHA1 6df587e1448ead208c0797f171f8501f4d40c6b4
SHA512 30680360109cd2b07b57172f349e263b095420b4e8f9336cc124f93951dff38bb2e76cabfc20750105d69f3a428ff3141b1c01c17888df6968942fbe9cd61fc3
SSDEEP 24576:qS28DzfhdASRqEpZOuUHon1ST7aeSuOoCxOSDHrvmXhN/A:qGPZ7qcUHon1SHouYIS7SA
MD5 SHA1 SHA512 SSDEEP

Submit Download

_iscrypt.dll

Path \Users\Admin\AppData\Local\Temp\is-57QOO.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-57QOO.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-57QOO.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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is-IG4QE.tmp

Path \Users\Admin\AppData\Local\Temp\is-BAUQ8.tmp\is-IG4QE.tmp
Size 643KB
SHA256 1441464feeef365573af18802c464769b7d3107624fde24604f57e386f97f1a7
MD5 85b94e72c3f2d2b5464e2aaf3c9e242a
SHA1 ce7ccae5f50a990d059d59292d4a332979e162ba
SHA512 c0c27189989db482be9bda5b6b8b1441bdc5e9b0f3a414ccab4c4be516e7f99e25717845361a5b196114502faaaf21bec7aca91b497acd2e2396f49c31850880
SSDEEP 12288:Oh5UooqWolrP837JzHvA6izJgnnyFNmayiAZrvJxO0:05NoqWolrP837JzHvA6yknyWFxvJxO0
MD5 SHA1 SHA512 SSDEEP

Submit Download

iTl41.exe

Path \Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\iTl41.exe
Size 72KB
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
SSDEEP 1536:bvUpDLxyxA14o3/M238r6+XfHAgbqmE8MpKdwuasZLUM7DsWlXcdyZgfmi:WDLZKa/MtXfHAgbqmEtxsfmyZgfmi
MD5 SHA1 SHA512 SSDEEP

Submit Download

iTl41.exe

Path \Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\iTl41.exe
Size 72KB
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
SSDEEP 1536:bvUpDLxyxA14o3/M238r6+XfHAgbqmE8MpKdwuasZLUM7DsWlXcdyZgfmi:WDLZKa/MtXfHAgbqmEtxsfmyZgfmi
MD5 SHA1 SHA512 SSDEEP

Submit Download

iTl41.exe

Path \Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\iTl41.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/1288-88-0x0000000003200000-0x0000000004184000-memory.dmp

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memory/1288-73-0x0000000003200000-0x0000000004184000-memory.dmp

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memory/1388-55-0x0000000000400000-0x0000000000413000-memory.dmp

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memory/1388-99-0x0000000000400000-0x0000000000413000-memory.dmp

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memory/1388-72-0x0000000000400000-0x0000000000413000-memory.dmp

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memory/1388-54-0x0000000075711000-0x0000000075713000-memory.dmp

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memory/1904-78-0x0000000000400000-0x0000000001384000-memory.dmp

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memory/1904-86-0x0000000010000000-0x000000001001B000-memory.dmp

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memory/1904-77-0x0000000000400000-0x0000000001384000-memory.dmp

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memory/1904-91-0x0000000000400000-0x0000000001384000-memory.dmp

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memory/1904-92-0x0000000001B70000-0x0000000002AF4000-memory.dmp

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memory/1904-93-0x0000000000400000-0x0000000001384000-memory.dmp

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memory/1904-76-0x0000000001B70000-0x0000000002AF4000-memory.dmp

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memory/1904-75-0x0000000001B70000-0x0000000002AF4000-memory.dmp

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memory/1904-98-0x0000000000400000-0x0000000001384000-memory.dmp

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memory/1904-74-0x0000000000400000-0x0000000001384000-memory.dmp

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