nymaim | 3972f6c03f1bcf2713e8483c64c8f6e5baa0a8513e42957e84dad13ae762beaf

Analysis

max time kernel
62s
max time network
63s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
12/12/2022, 01:01

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General

Target
file.exe
Size 2.3MB
Sample221212-bc8rasaa92
SHA256 3972f6c03f1bcf2713e8483c64c8f6e5baa0a8513e42957e84dad13ae762beaf
MD5 6c17ccd423b8a64e0caced4ceac40c7a
SHA1 46729b5e3fe8bd258389c0c638f516b0ff40c42b
SHA512 fb4143dc1abad7e0a330fe8e4a9a7907dc713f2bb9c3cf6f36b5e2828155681d67ef1a9527edf6a6e4a0da973503694a402334a520b92b9526de02fa62336b98
SSDEEP 49152:peCyiA36p5MrVl3i11Vb+aE07gfL+QqHOBicU8CZKUqrXdrwADzqQju:peAsji11Vbs4VuB28CZKbtrwADW3
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
908	is-J0V3K.tmp
1992	nvFolders.exe
1376	npOAG6.exe

Loads dropped DLL 10 IoCs

pid	Process
1756	file.exe
908	is-J0V3K.tmp
908	is-J0V3K.tmp
908	is-J0V3K.tmp
908	is-J0V3K.tmp
1992	nvFolders.exe
1992	nvFolders.exe
1992	nvFolders.exe
1376	npOAG6.exe
1376	npOAG6.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-8K96J.tmp	is-J0V3K.tmp
File created	C:\Program Files (x86)\PrintFolders\is-FSDMO.tmp	is-J0V3K.tmp
File created	C:\Program Files (x86)\PrintFolders\is-A70BO.tmp	is-J0V3K.tmp
File created	C:\Program Files (x86)\PrintFolders\is-LDVK6.tmp	is-J0V3K.tmp
File created	C:\Program Files (x86)\PrintFolders\is-871HT.tmp	is-J0V3K.tmp
File opened for modification	C:\Program Files (x86)\PrintFolders\unins000.dat	is-J0V3K.tmp
File opened for modification	C:\Program Files (x86)\PrintFolders\nvFolders.exe	is-J0V3K.tmp
File created	C:\Program Files (x86)\PrintFolders\unins000.dat	is-J0V3K.tmp
File created	C:\Program Files (x86)\PrintFolders\is-3VFKU.tmp	is-J0V3K.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
1092	taskkill.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1992	nvFolders.exe
1992	nvFolders.exe
1992	nvFolders.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeRestorePrivilege	908	is-J0V3K.tmp
Token: SeBackupPrivilege	908	is-J0V3K.tmp
Token: SeDebugPrivilege	1092	taskkill.exe

Suspicious use of WriteProcessMemory 35 IoCs

description	pid	Process	procid_target
PID 1756 wrote to memory of 908	1756	file.exe	27
PID 1756 wrote to memory of 908	1756	file.exe	27
PID 1756 wrote to memory of 908	1756	file.exe	27
PID 1756 wrote to memory of 908	1756	file.exe	27
PID 1756 wrote to memory of 908	1756	file.exe	27
PID 1756 wrote to memory of 908	1756	file.exe	27
PID 1756 wrote to memory of 908	1756	file.exe	27
PID 908 wrote to memory of 1992	908	is-J0V3K.tmp	28
PID 908 wrote to memory of 1992	908	is-J0V3K.tmp	28
PID 908 wrote to memory of 1992	908	is-J0V3K.tmp	28
PID 908 wrote to memory of 1992	908	is-J0V3K.tmp	28
PID 908 wrote to memory of 1992	908	is-J0V3K.tmp	28
PID 908 wrote to memory of 1992	908	is-J0V3K.tmp	28
PID 908 wrote to memory of 1992	908	is-J0V3K.tmp	28
PID 1992 wrote to memory of 1376	1992	nvFolders.exe	29
PID 1992 wrote to memory of 1376	1992	nvFolders.exe	29
PID 1992 wrote to memory of 1376	1992	nvFolders.exe	29
PID 1992 wrote to memory of 1376	1992	nvFolders.exe	29
PID 1992 wrote to memory of 1376	1992	nvFolders.exe	29
PID 1992 wrote to memory of 1376	1992	nvFolders.exe	29
PID 1992 wrote to memory of 1376	1992	nvFolders.exe	29
PID 1992 wrote to memory of 1132	1992	nvFolders.exe	32
PID 1992 wrote to memory of 1132	1992	nvFolders.exe	32
PID 1992 wrote to memory of 1132	1992	nvFolders.exe	32
PID 1992 wrote to memory of 1132	1992	nvFolders.exe	32
PID 1992 wrote to memory of 1132	1992	nvFolders.exe	32
PID 1992 wrote to memory of 1132	1992	nvFolders.exe	32
PID 1992 wrote to memory of 1132	1992	nvFolders.exe	32
PID 1132 wrote to memory of 1092	1132	cmd.exe	34
PID 1132 wrote to memory of 1092	1132	cmd.exe	34
PID 1132 wrote to memory of 1092	1132	cmd.exe	34
PID 1132 wrote to memory of 1092	1132	cmd.exe	34
PID 1132 wrote to memory of 1092	1132	cmd.exe	34
PID 1132 wrote to memory of 1092	1132	cmd.exe	34
PID 1132 wrote to memory of 1092	1132	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:1756
- C:\Users\Admin\AppData\Local\Temp\is-G6R2H.tmp\is-J0V3K.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-G6R2H.tmp\is-J0V3K.tmp" /SL4 $80124 "C:\Users\Admin\AppData\Local\Temp\file.exe" 2120607 171520
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in Program Files directory
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:908
- - C:\Program Files (x86)\PrintFolders\nvFolders.exe
    "C:\Program Files (x86)\PrintFolders\nvFolders.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:1992
  - - C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\npOAG6.exe
      4⤵
      Executes dropped EXE
      Loads dropped DLL
      PID:1376
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "nvFolders.exe" /f & erase "C:\Program Files (x86)\PrintFolders\nvFolders.exe" & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:1132
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "nvFolders.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:1092

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

nvFolders.exe

Path C:\Program Files (x86)\PrintFolders\nvFolders.exe
Size 3.4MB
SHA256 c0cda69633e14d3aea395f00430ea49806046fb8da9e2f05f9736cd8c4844248
MD5 e96719fbad696329a5362bb3652cf52c
SHA1 8b9b25f6c6303bced1d26535ab0398a7731f5ca8
SHA512 fa7d3ab70aeda1045d66ddbd0cb2081a3d1d1345e9e1be1369d2da114e58f228b2493670c3a108044e791ae381c541ce15d4d0a911c2073bc1429061c6571f1b
SSDEEP 98304:dTnIbTi5C+xTTvvonjtfRF9JNcf5L3g4k7ozk0fVGq:mL8D3vNP
MD5 SHA1 SHA512 SSDEEP

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nvFolders.exe

Path C:\Program Files (x86)\PrintFolders\nvFolders.exe
Size 3.4MB
SHA256 c0cda69633e14d3aea395f00430ea49806046fb8da9e2f05f9736cd8c4844248
MD5 e96719fbad696329a5362bb3652cf52c
SHA1 8b9b25f6c6303bced1d26535ab0398a7731f5ca8
SHA512 fa7d3ab70aeda1045d66ddbd0cb2081a3d1d1345e9e1be1369d2da114e58f228b2493670c3a108044e791ae381c541ce15d4d0a911c2073bc1429061c6571f1b
SSDEEP 98304:dTnIbTi5C+xTTvvonjtfRF9JNcf5L3g4k7ozk0fVGq:mL8D3vNP
MD5 SHA1 SHA512 SSDEEP

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is-J0V3K.tmp

Path C:\Users\Admin\AppData\Local\Temp\is-G6R2H.tmp\is-J0V3K.tmp
Size 760KB
SHA256 b4ef6313468f57e2134646e25a50b41dd568938b4851fd63a42ffe3d9a3ab317
MD5 a322b20a784ea4c33e6c79160c56e0a6
SHA1 69b4788c3da60a5d4c3a6a2549c42b0953ad7086
SHA512 b219ad0ed9573f00df880b6747ce4c062d5e25904615e7f04d247c0703d2c405fa6e1906dd4bde91ea50bd926a801a48adcb591eb64e59c07ab0a9f8f85f4f64
SSDEEP 12288:gh5UooqWolrP837JzHvA6izJgnnyFNmayiAZrvRtq2xO0:y5NoqWolrP837JzHvA6yknyWFxvRt3xz
MD5 SHA1 SHA512 SSDEEP

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is-J0V3K.tmp

Path C:\Users\Admin\AppData\Local\Temp\is-G6R2H.tmp\is-J0V3K.tmp
Size 760KB
SHA256 b4ef6313468f57e2134646e25a50b41dd568938b4851fd63a42ffe3d9a3ab317
MD5 a322b20a784ea4c33e6c79160c56e0a6
SHA1 69b4788c3da60a5d4c3a6a2549c42b0953ad7086
SHA512 b219ad0ed9573f00df880b6747ce4c062d5e25904615e7f04d247c0703d2c405fa6e1906dd4bde91ea50bd926a801a48adcb591eb64e59c07ab0a9f8f85f4f64
SSDEEP 12288:gh5UooqWolrP837JzHvA6izJgnnyFNmayiAZrvRtq2xO0:y5NoqWolrP837JzHvA6yknyWFxvRt3xz
MD5 SHA1 SHA512 SSDEEP

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npOAG6.exe

Path C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\npOAG6.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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npOAG6.exe

Path C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\npOAG6.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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nvFolders.exe

Path \Program Files (x86)\PrintFolders\nvFolders.exe
Size 3.4MB
SHA256 c0cda69633e14d3aea395f00430ea49806046fb8da9e2f05f9736cd8c4844248
MD5 e96719fbad696329a5362bb3652cf52c
SHA1 8b9b25f6c6303bced1d26535ab0398a7731f5ca8
SHA512 fa7d3ab70aeda1045d66ddbd0cb2081a3d1d1345e9e1be1369d2da114e58f228b2493670c3a108044e791ae381c541ce15d4d0a911c2073bc1429061c6571f1b
SSDEEP 98304:dTnIbTi5C+xTTvvonjtfRF9JNcf5L3g4k7ozk0fVGq:mL8D3vNP
MD5 SHA1 SHA512 SSDEEP

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nvFolders.exe

Path \Program Files (x86)\PrintFolders\nvFolders.exe
Size 3.4MB
SHA256 c0cda69633e14d3aea395f00430ea49806046fb8da9e2f05f9736cd8c4844248
MD5 e96719fbad696329a5362bb3652cf52c
SHA1 8b9b25f6c6303bced1d26535ab0398a7731f5ca8
SHA512 fa7d3ab70aeda1045d66ddbd0cb2081a3d1d1345e9e1be1369d2da114e58f228b2493670c3a108044e791ae381c541ce15d4d0a911c2073bc1429061c6571f1b
SSDEEP 98304:dTnIbTi5C+xTTvvonjtfRF9JNcf5L3g4k7ozk0fVGq:mL8D3vNP
MD5 SHA1 SHA512 SSDEEP

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nvFolders.exe

Path \Program Files (x86)\PrintFolders\nvFolders.exe
Size 3.4MB
SHA256 c0cda69633e14d3aea395f00430ea49806046fb8da9e2f05f9736cd8c4844248
MD5 e96719fbad696329a5362bb3652cf52c
SHA1 8b9b25f6c6303bced1d26535ab0398a7731f5ca8
SHA512 fa7d3ab70aeda1045d66ddbd0cb2081a3d1d1345e9e1be1369d2da114e58f228b2493670c3a108044e791ae381c541ce15d4d0a911c2073bc1429061c6571f1b
SSDEEP 98304:dTnIbTi5C+xTTvvonjtfRF9JNcf5L3g4k7ozk0fVGq:mL8D3vNP
MD5 SHA1 SHA512 SSDEEP

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_iscrypt.dll

Path \Users\Admin\AppData\Local\Temp\is-DL4PV.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-DL4PV.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-DL4PV.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-J0V3K.tmp

Path \Users\Admin\AppData\Local\Temp\is-G6R2H.tmp\is-J0V3K.tmp
Size 760KB
SHA256 b4ef6313468f57e2134646e25a50b41dd568938b4851fd63a42ffe3d9a3ab317
MD5 a322b20a784ea4c33e6c79160c56e0a6
SHA1 69b4788c3da60a5d4c3a6a2549c42b0953ad7086
SHA512 b219ad0ed9573f00df880b6747ce4c062d5e25904615e7f04d247c0703d2c405fa6e1906dd4bde91ea50bd926a801a48adcb591eb64e59c07ab0a9f8f85f4f64
SSDEEP 12288:gh5UooqWolrP837JzHvA6izJgnnyFNmayiAZrvRtq2xO0:y5NoqWolrP837JzHvA6yknyWFxvRt3xz
MD5 SHA1 SHA512 SSDEEP

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npOAG6.exe

Path \Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\npOAG6.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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npOAG6.exe

Path \Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\npOAG6.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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npOAG6.exe

Path \Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\npOAG6.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/908-73-0x0000000002F20000-0x0000000004091000-memory.dmp

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memory/1756-65-0x0000000000400000-0x0000000000430000-memory.dmp

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memory/1756-96-0x0000000000400000-0x0000000000430000-memory.dmp

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memory/1756-55-0x0000000000400000-0x0000000000430000-memory.dmp

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memory/1756-54-0x0000000076871000-0x0000000076873000-memory.dmp

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memory/1992-78-0x0000000000400000-0x0000000001571000-memory.dmp

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memory/1992-74-0x0000000000400000-0x0000000001571000-memory.dmp

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memory/1992-86-0x0000000000400000-0x0000000001571000-memory.dmp

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memory/1992-87-0x0000000010000000-0x000000001001B000-memory.dmp

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memory/1992-91-0x0000000000400000-0x0000000001571000-memory.dmp

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memory/1992-77-0x0000000000400000-0x0000000001571000-memory.dmp

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memory/1992-94-0x0000000000400000-0x0000000001571000-memory.dmp

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memory/1992-76-0x0000000001B10000-0x0000000002C81000-memory.dmp

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memory/1992-75-0x0000000001B10000-0x0000000002C81000-memory.dmp

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