nymaim | b6e31a23835b7aa9a9fdc09f5f1e2ab0a144bba25bcd7064a53a0e127f2a6340

Analysis

max time kernel
67s
max time network
69s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
22/11/2022, 11:31

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General

Target
file.exe
Size 1.4MB
Sample221122-nmpsdsbe44
SHA256 b6e31a23835b7aa9a9fdc09f5f1e2ab0a144bba25bcd7064a53a0e127f2a6340
MD5 980f69c0108ea0f27b2be4700786623f
SHA1 f55aa9979f65aead0a508f00fd966d501167e839
SHA512 9a2746648093c663ab89446f105da1ff3b605350c8b4e3cbea3c7d314943eb18ef1435182e53acac11240744ef0c024bd20bc932382a05b3a1e4763973b217c8
SSDEEP 24576:Bizjftje4S9VGZ/1ndqmm/2759Xn+vbMlWpCgZXONKiuaHJpgZIY7eCLxYib:qjnqmqY/+DMlW4O+NxJ2NeVib
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
968	is-0CATP.tmp
1192	PrintFolders.exe
1752	PPj6A.exe

Loads dropped DLL 10 IoCs

pid	Process
1720	file.exe
968	is-0CATP.tmp
968	is-0CATP.tmp
968	is-0CATP.tmp
968	is-0CATP.tmp
1192	PrintFolders.exe
1192	PrintFolders.exe
1192	PrintFolders.exe
1752	PPj6A.exe
1752	PPj6A.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-7KTED.tmp	is-0CATP.tmp
File opened for modification	C:\Program Files (x86)\PrintFolders\PrintFolders.exe	is-0CATP.tmp
File created	C:\Program Files (x86)\PrintFolders\unins000.dat	is-0CATP.tmp
File created	C:\Program Files (x86)\PrintFolders\is-NNO87.tmp	is-0CATP.tmp
File created	C:\Program Files (x86)\PrintFolders\is-4EQBH.tmp	is-0CATP.tmp
File opened for modification	C:\Program Files (x86)\PrintFolders\unins000.dat	is-0CATP.tmp
File created	C:\Program Files (x86)\PrintFolders\is-OBFNV.tmp	is-0CATP.tmp
File created	C:\Program Files (x86)\PrintFolders\is-1O1G1.tmp	is-0CATP.tmp
File created	C:\Program Files (x86)\PrintFolders\is-0HHHJ.tmp	is-0CATP.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
1192	PrintFolders.exe
1192	PrintFolders.exe
1192	PrintFolders.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeRestorePrivilege	968	is-0CATP.tmp
Token: SeBackupPrivilege	968	is-0CATP.tmp
Token: SeDebugPrivilege	1180	taskkill.exe

Suspicious use of WriteProcessMemory 35 IoCs

description	pid	Process	procid_target
PID 1720 wrote to memory of 968	1720	file.exe	27
PID 1720 wrote to memory of 968	1720	file.exe	27
PID 1720 wrote to memory of 968	1720	file.exe	27
PID 1720 wrote to memory of 968	1720	file.exe	27
PID 1720 wrote to memory of 968	1720	file.exe	27
PID 1720 wrote to memory of 968	1720	file.exe	27
PID 1720 wrote to memory of 968	1720	file.exe	27
PID 968 wrote to memory of 1192	968	is-0CATP.tmp	28
PID 968 wrote to memory of 1192	968	is-0CATP.tmp	28
PID 968 wrote to memory of 1192	968	is-0CATP.tmp	28
PID 968 wrote to memory of 1192	968	is-0CATP.tmp	28
PID 968 wrote to memory of 1192	968	is-0CATP.tmp	28
PID 968 wrote to memory of 1192	968	is-0CATP.tmp	28
PID 968 wrote to memory of 1192	968	is-0CATP.tmp	28
PID 1192 wrote to memory of 1752	1192	PrintFolders.exe	29
PID 1192 wrote to memory of 1752	1192	PrintFolders.exe	29
PID 1192 wrote to memory of 1752	1192	PrintFolders.exe	29
PID 1192 wrote to memory of 1752	1192	PrintFolders.exe	29
PID 1192 wrote to memory of 1752	1192	PrintFolders.exe	29
PID 1192 wrote to memory of 1752	1192	PrintFolders.exe	29
PID 1192 wrote to memory of 1752	1192	PrintFolders.exe	29
PID 1192 wrote to memory of 1680	1192	PrintFolders.exe	32
PID 1192 wrote to memory of 1680	1192	PrintFolders.exe	32
PID 1192 wrote to memory of 1680	1192	PrintFolders.exe	32
PID 1192 wrote to memory of 1680	1192	PrintFolders.exe	32
PID 1192 wrote to memory of 1680	1192	PrintFolders.exe	32
PID 1192 wrote to memory of 1680	1192	PrintFolders.exe	32
PID 1192 wrote to memory of 1680	1192	PrintFolders.exe	32
PID 1680 wrote to memory of 1180	1680	cmd.exe	34
PID 1680 wrote to memory of 1180	1680	cmd.exe	34
PID 1680 wrote to memory of 1180	1680	cmd.exe	34
PID 1680 wrote to memory of 1180	1680	cmd.exe	34
PID 1680 wrote to memory of 1180	1680	cmd.exe	34
PID 1680 wrote to memory of 1180	1680	cmd.exe	34
PID 1680 wrote to memory of 1180	1680	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:1720
- C:\Users\Admin\AppData\Local\Temp\is-5GRF9.tmp\is-0CATP.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-5GRF9.tmp\is-0CATP.tmp" /SL4 $70022 "C:\Users\Admin\AppData\Local\Temp\file.exe" 1214064 51712
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in Program Files directory
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:968
- - 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:1192
  - - C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\PPj6A.exe
      4⤵
      Executes dropped EXE
      Loads dropped DLL
      PID:1752
  - - 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:1680
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "PrintFolders.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

PrintFolders.exe

Path C:\Program Files (x86)\PrintFolders\PrintFolders.exe
Size 1.6MB
SHA256 407e9e7220fa81d1a59604ec4291652f71a9df4ed4b77f29f056d7dad6dc5c66
MD5 e71851f4c346234c444c8c98cf14bdc5
SHA1 92e2eb857d64d41beec8168ce8369a4cf3b97611
SHA512 e3c666142118e486cb65160f72af1cdbeebe6c5cd79bcfc8df5d5c81685542f05589c3ee064705c9b20b9ca6c909f265838194d201e5d1f7f318fb9a12f8f97a
SSDEEP 24576:B+9+i52+b5vQ+p+SNf+g+hZ+PB+NHfOt+TDdN834F0smfg0r1umHN0EWC:QMi5P1BoSNGph4KOtOZNybENqN0Ev
MD5 SHA1 SHA512 SSDEEP

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PrintFolders.exe

Path C:\Program Files (x86)\PrintFolders\PrintFolders.exe
Size 1.6MB
SHA256 407e9e7220fa81d1a59604ec4291652f71a9df4ed4b77f29f056d7dad6dc5c66
MD5 e71851f4c346234c444c8c98cf14bdc5
SHA1 92e2eb857d64d41beec8168ce8369a4cf3b97611
SHA512 e3c666142118e486cb65160f72af1cdbeebe6c5cd79bcfc8df5d5c81685542f05589c3ee064705c9b20b9ca6c909f265838194d201e5d1f7f318fb9a12f8f97a
SSDEEP 24576:B+9+i52+b5vQ+p+SNf+g+hZ+PB+NHfOt+TDdN834F0smfg0r1umHN0EWC:QMi5P1BoSNGph4KOtOZNybENqN0Ev
MD5 SHA1 SHA512 SSDEEP

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is-0CATP.tmp

Path C:\Users\Admin\AppData\Local\Temp\is-5GRF9.tmp\is-0CATP.tmp
Size 643KB
SHA256 1441464feeef365573af18802c464769b7d3107624fde24604f57e386f97f1a7
MD5 85b94e72c3f2d2b5464e2aaf3c9e242a
SHA1 ce7ccae5f50a990d059d59292d4a332979e162ba
SHA512 c0c27189989db482be9bda5b6b8b1441bdc5e9b0f3a414ccab4c4be516e7f99e25717845361a5b196114502faaaf21bec7aca91b497acd2e2396f49c31850880
SSDEEP 12288:Oh5UooqWolrP837JzHvA6izJgnnyFNmayiAZrvJxO0:05NoqWolrP837JzHvA6yknyWFxvJxO0
MD5 SHA1 SHA512 SSDEEP

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is-0CATP.tmp

Path C:\Users\Admin\AppData\Local\Temp\is-5GRF9.tmp\is-0CATP.tmp
Size 643KB
SHA256 1441464feeef365573af18802c464769b7d3107624fde24604f57e386f97f1a7
MD5 85b94e72c3f2d2b5464e2aaf3c9e242a
SHA1 ce7ccae5f50a990d059d59292d4a332979e162ba
SHA512 c0c27189989db482be9bda5b6b8b1441bdc5e9b0f3a414ccab4c4be516e7f99e25717845361a5b196114502faaaf21bec7aca91b497acd2e2396f49c31850880
SSDEEP 12288:Oh5UooqWolrP837JzHvA6izJgnnyFNmayiAZrvJxO0:05NoqWolrP837JzHvA6yknyWFxvJxO0
MD5 SHA1 SHA512 SSDEEP

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PPj6A.exe

Path C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\PPj6A.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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PPj6A.exe

Path C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\PPj6A.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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PrintFolders.exe

Path \Program Files (x86)\PrintFolders\PrintFolders.exe
Size 1.6MB
SHA256 407e9e7220fa81d1a59604ec4291652f71a9df4ed4b77f29f056d7dad6dc5c66
MD5 e71851f4c346234c444c8c98cf14bdc5
SHA1 92e2eb857d64d41beec8168ce8369a4cf3b97611
SHA512 e3c666142118e486cb65160f72af1cdbeebe6c5cd79bcfc8df5d5c81685542f05589c3ee064705c9b20b9ca6c909f265838194d201e5d1f7f318fb9a12f8f97a
SSDEEP 24576:B+9+i52+b5vQ+p+SNf+g+hZ+PB+NHfOt+TDdN834F0smfg0r1umHN0EWC:QMi5P1BoSNGph4KOtOZNybENqN0Ev
MD5 SHA1 SHA512 SSDEEP

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PrintFolders.exe

Path \Program Files (x86)\PrintFolders\PrintFolders.exe
Size 1.6MB
SHA256 407e9e7220fa81d1a59604ec4291652f71a9df4ed4b77f29f056d7dad6dc5c66
MD5 e71851f4c346234c444c8c98cf14bdc5
SHA1 92e2eb857d64d41beec8168ce8369a4cf3b97611
SHA512 e3c666142118e486cb65160f72af1cdbeebe6c5cd79bcfc8df5d5c81685542f05589c3ee064705c9b20b9ca6c909f265838194d201e5d1f7f318fb9a12f8f97a
SSDEEP 24576:B+9+i52+b5vQ+p+SNf+g+hZ+PB+NHfOt+TDdN834F0smfg0r1umHN0EWC:QMi5P1BoSNGph4KOtOZNybENqN0Ev
MD5 SHA1 SHA512 SSDEEP

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PrintFolders.exe

Path \Program Files (x86)\PrintFolders\PrintFolders.exe
Size 1.6MB
SHA256 407e9e7220fa81d1a59604ec4291652f71a9df4ed4b77f29f056d7dad6dc5c66
MD5 e71851f4c346234c444c8c98cf14bdc5
SHA1 92e2eb857d64d41beec8168ce8369a4cf3b97611
SHA512 e3c666142118e486cb65160f72af1cdbeebe6c5cd79bcfc8df5d5c81685542f05589c3ee064705c9b20b9ca6c909f265838194d201e5d1f7f318fb9a12f8f97a
SSDEEP 24576:B+9+i52+b5vQ+p+SNf+g+hZ+PB+NHfOt+TDdN834F0smfg0r1umHN0EWC:QMi5P1BoSNGph4KOtOZNybENqN0Ev
MD5 SHA1 SHA512 SSDEEP

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is-0CATP.tmp

Path \Users\Admin\AppData\Local\Temp\is-5GRF9.tmp\is-0CATP.tmp
Size 643KB
SHA256 1441464feeef365573af18802c464769b7d3107624fde24604f57e386f97f1a7
MD5 85b94e72c3f2d2b5464e2aaf3c9e242a
SHA1 ce7ccae5f50a990d059d59292d4a332979e162ba
SHA512 c0c27189989db482be9bda5b6b8b1441bdc5e9b0f3a414ccab4c4be516e7f99e25717845361a5b196114502faaaf21bec7aca91b497acd2e2396f49c31850880
SSDEEP 12288:Oh5UooqWolrP837JzHvA6izJgnnyFNmayiAZrvJxO0:05NoqWolrP837JzHvA6yknyWFxvJxO0
MD5 SHA1 SHA512 SSDEEP

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_iscrypt.dll

Path \Users\Admin\AppData\Local\Temp\is-AH40J.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-AH40J.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-AH40J.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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PPj6A.exe

Path \Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\PPj6A.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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PPj6A.exe

Path \Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\PPj6A.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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PPj6A.exe

Path \Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\PPj6A.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/968-86-0x0000000003060000-0x0000000003FFD000-memory.dmp

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memory/968-73-0x0000000003060000-0x0000000003FFD000-memory.dmp

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memory/1192-75-0x00000000018F0000-0x000000000288D000-memory.dmp

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memory/1192-89-0x0000000010000000-0x000000001001B000-memory.dmp

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memory/1192-77-0x0000000000400000-0x000000000139D000-memory.dmp

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memory/1192-76-0x00000000018F0000-0x000000000288D000-memory.dmp

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memory/1192-96-0x0000000000400000-0x000000000139D000-memory.dmp

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memory/1192-78-0x0000000000400000-0x000000000139D000-memory.dmp

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memory/1192-74-0x0000000000400000-0x000000000139D000-memory.dmp

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memory/1192-93-0x0000000000400000-0x000000000139D000-memory.dmp

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memory/1192-87-0x0000000000400000-0x000000000139D000-memory.dmp

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memory/1192-88-0x00000000018F0000-0x000000000288D000-memory.dmp

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memory/1720-65-0x0000000000400000-0x0000000000413000-memory.dmp

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memory/1720-54-0x0000000075BD1000-0x0000000075BD3000-memory.dmp

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memory/1720-97-0x0000000000400000-0x0000000000413000-memory.dmp

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memory/1720-55-0x0000000000400000-0x0000000000413000-memory.dmp

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