nymaim | 43918d8c4473265ec9b69efd8070a14e6732bafb4e7dd39f26213217c26e9796

Analysis

max time kernel
101s
max time network
137s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
25/11/2022, 11:04

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General

Target

file.exe
Size

1.5MB
MD5

3ec8cc709e2c6c399995935a26b1424c
SHA1

e326e1dc24819ff6b2833452b38598c943c62197
SHA256

43918d8c4473265ec9b69efd8070a14e6732bafb4e7dd39f26213217c26e9796
SHA512

b59a4414d9bebffad20d4c0ecd2b19ab42a8734333826c9d0447003e2536f41baefcce8537719264c5c10ee88a36ff29fc0db2e6a02a03bdd914ec87678569bc
SSDEEP

24576:Bizcbc+fYNbvGln0RPYdctjmb+3G2UQeIFB+4Bz1U9vetEckQjj/jCsvdfaY6z7O:qkffYNjen0RMc9mSCi+4ZtV/3/2svdfj

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
1532	is-TIJ7R.tmp
1740	PrintFolders.exe
524	ZCpaqQdNio.exe

Loads dropped DLL 10 IoCs

pid	Process
1712	file.exe
1532	is-TIJ7R.tmp
1532	is-TIJ7R.tmp
1532	is-TIJ7R.tmp
1532	is-TIJ7R.tmp
1740	PrintFolders.exe
1740	PrintFolders.exe
1740	PrintFolders.exe
524	ZCpaqQdNio.exe
524	ZCpaqQdNio.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-U2NEQ.tmp	is-TIJ7R.tmp
File created	C:\Program Files (x86)\PrintFolders\is-KNHKV.tmp	is-TIJ7R.tmp
File created	C:\Program Files (x86)\PrintFolders\unins000.dat	is-TIJ7R.tmp
File created	C:\Program Files (x86)\PrintFolders\is-TKS72.tmp	is-TIJ7R.tmp
File created	C:\Program Files (x86)\PrintFolders\is-D9JSG.tmp	is-TIJ7R.tmp
File created	C:\Program Files (x86)\PrintFolders\is-0HJHH.tmp	is-TIJ7R.tmp
File created	C:\Program Files (x86)\PrintFolders\is-G46BK.tmp	is-TIJ7R.tmp
File opened for modification	C:\Program Files (x86)\PrintFolders\unins000.dat	is-TIJ7R.tmp
File opened for modification	C:\Program Files (x86)\PrintFolders\PrintFolders.exe	is-TIJ7R.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
1392	taskkill.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1740	PrintFolders.exe
1740	PrintFolders.exe
1740	PrintFolders.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeRestorePrivilege	1532	is-TIJ7R.tmp
Token: SeBackupPrivilege	1532	is-TIJ7R.tmp
Token: SeDebugPrivilege	1392	taskkill.exe

Suspicious use of WriteProcessMemory 35 IoCs

description	pid	Process	procid_target
PID 1712 wrote to memory of 1532	1712	file.exe	27
PID 1712 wrote to memory of 1532	1712	file.exe	27
PID 1712 wrote to memory of 1532	1712	file.exe	27
PID 1712 wrote to memory of 1532	1712	file.exe	27
PID 1712 wrote to memory of 1532	1712	file.exe	27
PID 1712 wrote to memory of 1532	1712	file.exe	27
PID 1712 wrote to memory of 1532	1712	file.exe	27
PID 1532 wrote to memory of 1740	1532	is-TIJ7R.tmp	28
PID 1532 wrote to memory of 1740	1532	is-TIJ7R.tmp	28
PID 1532 wrote to memory of 1740	1532	is-TIJ7R.tmp	28
PID 1532 wrote to memory of 1740	1532	is-TIJ7R.tmp	28
PID 1532 wrote to memory of 1740	1532	is-TIJ7R.tmp	28
PID 1532 wrote to memory of 1740	1532	is-TIJ7R.tmp	28
PID 1532 wrote to memory of 1740	1532	is-TIJ7R.tmp	28
PID 1740 wrote to memory of 524	1740	PrintFolders.exe	29
PID 1740 wrote to memory of 524	1740	PrintFolders.exe	29
PID 1740 wrote to memory of 524	1740	PrintFolders.exe	29
PID 1740 wrote to memory of 524	1740	PrintFolders.exe	29
PID 1740 wrote to memory of 524	1740	PrintFolders.exe	29
PID 1740 wrote to memory of 524	1740	PrintFolders.exe	29
PID 1740 wrote to memory of 524	1740	PrintFolders.exe	29
PID 1740 wrote to memory of 1288	1740	PrintFolders.exe	32
PID 1740 wrote to memory of 1288	1740	PrintFolders.exe	32
PID 1740 wrote to memory of 1288	1740	PrintFolders.exe	32
PID 1740 wrote to memory of 1288	1740	PrintFolders.exe	32
PID 1740 wrote to memory of 1288	1740	PrintFolders.exe	32
PID 1740 wrote to memory of 1288	1740	PrintFolders.exe	32
PID 1740 wrote to memory of 1288	1740	PrintFolders.exe	32
PID 1288 wrote to memory of 1392	1288	cmd.exe	34
PID 1288 wrote to memory of 1392	1288	cmd.exe	34
PID 1288 wrote to memory of 1392	1288	cmd.exe	34
PID 1288 wrote to memory of 1392	1288	cmd.exe	34
PID 1288 wrote to memory of 1392	1288	cmd.exe	34
PID 1288 wrote to memory of 1392	1288	cmd.exe	34
PID 1288 wrote to memory of 1392	1288	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:1712
- C:\Users\Admin\AppData\Local\Temp\is-TGBLM.tmp\is-TIJ7R.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-TGBLM.tmp\is-TIJ7R.tmp" /SL4 $60122 "C:\Users\Admin\AppData\Local\Temp\file.exe" 1289975 51712
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in Program Files directory
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1532
- - 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:1740
  - - C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\ZCpaqQdNio.exe
      4⤵
      Executes dropped EXE
      Loads dropped DLL
      PID:524
  - - 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:1288
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "PrintFolders.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:1392

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

C:\Program Files (x86)\PrintFolders\PrintFolders.exe

Filesize
1.7MB

MD5
eb85e6a62b372f6c784e55d9d7ffafad

SHA1
92064fd395302ce3f40db1decabeb5d69173a732

SHA256
917dd8561fba8dbb2386d3c92589328bf1f96f7d93a7ae26019247cab7d1331d

SHA512
5ff353943e2c24260e2e98b48fdd2d958f53ccdebbf934322c1123ec417500c113e787548c8a84e85b7d746c75bc7a28cec8f4a1c447f1edcfa773fba693421e

Download Submit
C:\Program Files (x86)\PrintFolders\PrintFolders.exe

Filesize
1.7MB

MD5
eb85e6a62b372f6c784e55d9d7ffafad

SHA1
92064fd395302ce3f40db1decabeb5d69173a732

SHA256
917dd8561fba8dbb2386d3c92589328bf1f96f7d93a7ae26019247cab7d1331d

SHA512
5ff353943e2c24260e2e98b48fdd2d958f53ccdebbf934322c1123ec417500c113e787548c8a84e85b7d746c75bc7a28cec8f4a1c447f1edcfa773fba693421e

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-TGBLM.tmp\is-TIJ7R.tmp

Filesize
643KB

MD5
85b94e72c3f2d2b5464e2aaf3c9e242a

SHA1
ce7ccae5f50a990d059d59292d4a332979e162ba

SHA256
1441464feeef365573af18802c464769b7d3107624fde24604f57e386f97f1a7

SHA512
c0c27189989db482be9bda5b6b8b1441bdc5e9b0f3a414ccab4c4be516e7f99e25717845361a5b196114502faaaf21bec7aca91b497acd2e2396f49c31850880

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-TGBLM.tmp\is-TIJ7R.tmp

Filesize
643KB

MD5
85b94e72c3f2d2b5464e2aaf3c9e242a

SHA1
ce7ccae5f50a990d059d59292d4a332979e162ba

SHA256
1441464feeef365573af18802c464769b7d3107624fde24604f57e386f97f1a7

SHA512
c0c27189989db482be9bda5b6b8b1441bdc5e9b0f3a414ccab4c4be516e7f99e25717845361a5b196114502faaaf21bec7aca91b497acd2e2396f49c31850880

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

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

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

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
\Program Files (x86)\PrintFolders\PrintFolders.exe

Filesize
1.7MB

MD5
eb85e6a62b372f6c784e55d9d7ffafad

SHA1
92064fd395302ce3f40db1decabeb5d69173a732

SHA256
917dd8561fba8dbb2386d3c92589328bf1f96f7d93a7ae26019247cab7d1331d

SHA512
5ff353943e2c24260e2e98b48fdd2d958f53ccdebbf934322c1123ec417500c113e787548c8a84e85b7d746c75bc7a28cec8f4a1c447f1edcfa773fba693421e

Download Submit
\Program Files (x86)\PrintFolders\PrintFolders.exe

Filesize
1.7MB

MD5
eb85e6a62b372f6c784e55d9d7ffafad

SHA1
92064fd395302ce3f40db1decabeb5d69173a732

SHA256
917dd8561fba8dbb2386d3c92589328bf1f96f7d93a7ae26019247cab7d1331d

SHA512
5ff353943e2c24260e2e98b48fdd2d958f53ccdebbf934322c1123ec417500c113e787548c8a84e85b7d746c75bc7a28cec8f4a1c447f1edcfa773fba693421e

Download Submit
\Program Files (x86)\PrintFolders\PrintFolders.exe

Filesize
1.7MB

MD5
eb85e6a62b372f6c784e55d9d7ffafad

SHA1
92064fd395302ce3f40db1decabeb5d69173a732

SHA256
917dd8561fba8dbb2386d3c92589328bf1f96f7d93a7ae26019247cab7d1331d

SHA512
5ff353943e2c24260e2e98b48fdd2d958f53ccdebbf934322c1123ec417500c113e787548c8a84e85b7d746c75bc7a28cec8f4a1c447f1edcfa773fba693421e

Download Submit
\Users\Admin\AppData\Local\Temp\is-K683E.tmp\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
\Users\Admin\AppData\Local\Temp\is-K683E.tmp\_isetup\_shfoldr.dll

Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
\Users\Admin\AppData\Local\Temp\is-K683E.tmp\_isetup\_shfoldr.dll

Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
\Users\Admin\AppData\Local\Temp\is-TGBLM.tmp\is-TIJ7R.tmp

Filesize
643KB

MD5
85b94e72c3f2d2b5464e2aaf3c9e242a

SHA1
ce7ccae5f50a990d059d59292d4a332979e162ba

SHA256
1441464feeef365573af18802c464769b7d3107624fde24604f57e386f97f1a7

SHA512
c0c27189989db482be9bda5b6b8b1441bdc5e9b0f3a414ccab4c4be516e7f99e25717845361a5b196114502faaaf21bec7aca91b497acd2e2396f49c31850880

Download Submit
\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\ZCpaqQdNio.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\ZCpaqQdNio.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\ZCpaqQdNio.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
memory/1532-73-0x0000000003040000-0x0000000003FF6000-memory.dmp

Filesize
15.7MB

Download
memory/1532-86-0x0000000003040000-0x0000000003FF6000-memory.dmp

Filesize
15.7MB

Download
memory/1712-96-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/1712-54-0x0000000075771000-0x0000000075773000-memory.dmp

Filesize
8KB

Download
memory/1712-55-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/1712-65-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/1740-75-0x0000000001A50000-0x0000000002A06000-memory.dmp

Filesize
15.7MB

Download
memory/1740-74-0x0000000000400000-0x00000000013B6000-memory.dmp

Filesize
15.7MB

Download
memory/1740-77-0x0000000000400000-0x00000000013B6000-memory.dmp

Filesize
15.7MB

Download
memory/1740-87-0x0000000000400000-0x00000000013B6000-memory.dmp

Filesize
15.7MB

Download
memory/1740-88-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download
memory/1740-76-0x0000000001A50000-0x0000000002A06000-memory.dmp

Filesize
15.7MB

Download
memory/1740-95-0x0000000000400000-0x00000000013B6000-memory.dmp

Filesize
15.7MB

Download
memory/1740-78-0x0000000000400000-0x00000000013B6000-memory.dmp

Filesize
15.7MB

Download